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This is a case study of how our plating and surface treatment technology solved the quality issues faced by our customer. Case Study 2: Achieving burr removal and improved surface roughness for zinc die-cast products using our original chemicals ■ Die-casting company D Burr removal for zinc die-cast (ZDC2) products was being done through barrel polishing, but the burrs on the inner diameter and corners could not be completely removed. Although they engaged in long hours of barrel polishing, the gloss decreased and the appearance worsened. They consulted us about whether our chemicals could help with burr removal. By using our original manufactured chemicals to remove the burrs on the inner diameter and corners, we improved the surface roughness and achieved both burr removal and appearance enhancement at a low cost.

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We will introduce examples of how we have solved the functional characteristics challenges faced by our customers and cases adopted through VE proposals. Case 3: Direct Chromate for Zinc Die Casting (for rust prevention) ■ Automotive Parts Manufacturer Company A Due to the very strict dimensional tolerances of the zinc die casting (ZDC1) products, it was not possible to apply electro-zinc plating. We received an inquiry from a customer who was looking for a company that could achieve "no white rust formation after 50 hours in the JIS neutral salt spray test" using trivalent chromium-based direct chromate on zinc die casting. After evaluating our prototype of direct chromate, we cleared the "no white rust formation after 50 hours in the JIS neutral salt spray test" and proceeded to mass production.

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We will introduce examples of how we have solved the functional characteristics challenges faced by our customers and cases that have been adopted through VE proposals. Example 2: Nickel plating "Solderable Nickel Plating" with soldering strength equivalent to tin plating. ■ Company M related to electronic components A customer who was looking for a plating company that could provide nickel plating with solder wetting properties equivalent to tin for micro-sized components made of 42 alloy material to be soldered onto printed circuit boards without flux visited us through a recommendation from a chemical manufacturer. We proposed processing our "Solderable Nickel Plating" using barrel plating, conducted prototype trials, and received evaluations. We repeatedly tested various storage conditions before soldering, and consistently achieved stable high solder wetting properties, securing the desired soldering strength, which led to orders for mass production.

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Case 4: Trivalent Chromium Plating (Barrel Plating) ■ Electric Manufacturer F Company For a product from our client company, we were performing nickel + decorative chromium plating (hexavalent chromium) on small aluminum A 5052 machined parts using jigs. The required quality included specified film thickness, no scratches, and corrosion resistance with no white rust occurring after 48 hours in the JIS neutral salt spray test. However, since the products were small in size, we proposed barrel nickel plating + barrel trivalent chromium plating. As a result of prototype evaluation, we cleared all the required quality standards, leading to a specification change and achieving cost reduction.

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Case 3: Trivalent Chromium Conversion Treatment for Aluminum Die Casting Material (Alozin Alternative) ■ Automotive Parts Die Casting Company N As part of a cost reduction plan for products that were anodized for corrosion resistance (rust prevention) on aluminum die casting materials, we proposed a trivalent chromium conversion treatment (Alozin alternative) for aluminum die casting. Since the condition was to clear the JIS neutral salt spray test with a rating number (RN) of 9.5 for 72 hours, we conducted a trial production for evaluation. It cleared without any issues, leading to mass production due to the specification change.

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Case 2: Nickel plating "Solderable Nickel Plating" with soldering strength equivalent to tin plating ■ Client H in the electronic components sector We proposed "Solderable Nickel Plating," which consists of copper plating plus nickel plating for soldering, to a client company that is planning to reduce costs for a product designed for soldering, which originally used brass material with copper plating, nickel plating (for diffusion prevention), and tin plating. After prototyping and evaluation, we received positive feedback on the solder wetting test, leading to a specification change and successful cost reduction.

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Available Investigation Certificates The following are the environmental-related inquiries and certificate requests that we respond to from our customers: - SDS - chemSHERPA CI - chemSHERPA AI - Precision analysis data of plating film (mercury, lead, cadmium, hexavalent chromium concentration analysis data via ICP, etc.) - Compliance certificates for RoHS Directive and REACH regulations - Usage declaration or non-use certificate issued by the manufacturer of chemicals used in plating, chemical treatment, and anodizing - Investigation of conflict minerals such as gold, tantalum, tungsten, and tin - Usage declaration or non-use certificate for the list of chemical substances specified by the customer

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All our plating is compliant! All plating and surface treatment conducted by our company comply with the RoHS Directive and REACH regulations. For example, in the past, there was a chromate treatment using hexavalent chromium to provide corrosion resistance on zinc plating and aluminum. However, the chromate coating, which is a chemical treatment using hexavalent chromium compounds, obviously cannot comply with the RoHS Directive because it contains hexavalent chromium compounds. As an alternative, we now use trivalent chromium chromate (trivalent chromium chemical treatment). The chemical treatment coating using trivalent chromium compounds does not contain hexavalent chromium compounds, as it is made from chromium hydroxide and trivalent chromium (trivalent chromium compounds). Furthermore, by generating a coating containing trivalent chromium compounds on the surface of zinc or aluminum, we can achieve high corrosion resistance.

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As one of the connectors for in-vehicle high-speed transmission systems, the development of products compliant with the German FAKRA standard and the USCAR connector from the United States is becoming more active.

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We created test specimens using four types of plating that are believed to have high antibacterial properties and conducted tests based on JIS Z 2801 at a formal evaluation institution. The test bacteria used were Staphylococcus aureus, and polyethylene film was used as the unprocessed test specimen. The results showed that three types of plated test specimens had antibacterial activity values of 2.0 or higher. It is stipulated that if the antibacterial activity value is 2.0 or higher, the product has antibacterial effects. While antibacterial properties were confirmed in the three types of plating, we also understand that there are specially high-effect plating types (with antibacterial activity values of 5.0 or higher). For more details, please refer to the PDF document.

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Q: Is it possible to have plating that complies with RoHS? A: All types of our plating are RoHS compliant. We can also provide all necessary documents such as MSDS. Q: Can you issue environmental-related certificates such as RoHS, REACH, and non-use certificates? A: The environmental-related inquiries and certificate requests we handle from customers are as follows (basic information). Please feel free to contact us.

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If you are involved in surface treatment, the first thing that comes to mind when you hear "chromium" is likely hexavalent chromium compounds. Hexavalent chromium compounds are regulated substances under the RoHS Directive and REACH regulation for SVHC (Substances of Very High Concern), so many of you may be familiar with them from product substance investigation lists. On the other hand, the chromium used in surface treatment is not limited to hexavalent chromium compounds. Chromium nitrate and chromium chloride are classified as trivalent chromium compounds. Metallic chromium is zero-valent chromium, which is relatively gentle on the human body and less likely to cause metal allergies. While trivalent chromium compounds are chemical substances and are not inherently safe, if they come into contact with the skin, washing them off immediately will not cause ulcers, and they are not listed as carcinogenic substances. The issue lies with hexavalent chromium compounds, which can cause lung damage if inhaled, gastrointestinal issues if ingested, and are considered carcinogenic. If you have any questions or concerns, please feel free to contact us. 【Contact Information】 TEL: 048-994-5931 FAX: 048-994-5935 E-mail: info@silvec.co.jp

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Features of zinc-coated aluminum alloy material with trivalent black chromate 1. Zinc coating is possible on aluminum alloys. 2. Our company uses a cyan bath zinc plating solution that generates fewer whiskers than a zincate bath. 3. It provides a beautiful black appearance with trivalent black chromate. 4. With trivalent black chromate (appearance-focused specification), it has corrosion resistance with no white rust after 96 hours of JIS salt spray testing. 5. With trivalent black chromate (corrosion resistance-focused specification), it has corrosion resistance with no white rust after 240 hours of JIS salt spray testing. 6. With trivalent chromate (white), it has corrosion resistance with no white rust after 240 hours of JIS salt spray testing. 7. All zinc plating and chromate processes comply with the RoHS directive. 8. Method: Barrel plating (rotary plating), jigs. 9. It has conductivity.

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Our Thai factory (THAI SILVEC CO., LTD) has a dedicated anodizing line specifically for aluminum die casting. By understanding the characteristics of aluminum die casting and designing processes tailored to specific purposes on this dedicated anodizing line, we can achieve high-quality anodizing treatment for aluminum die castings. In particular, anodizing die cast materials such as ADC12, which typically contains 1.5 to 3.5% copper (Cu) and 9.6 to 12% silicon (Si), is generally considered difficult. However, we are mass-producing these materials on our highly productive dedicated line.

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Silvec has been honing its expertise in plating zinc die-casting for many years. We take pride in possessing know-how that can be considered one of our features, especially when it comes to plating precision zinc die-casting. While zinc die-casting is an excellent manufacturing method, achieving zero material defects is also challenging. Additionally, zinc die-casting is a material that is difficult to re-plate. With a deep understanding of this, it is essential for die casters and our company to collaborate in creating zinc die-casting quality and designing matched processes for plating; otherwise, we cannot produce stable products. We utilize our know-how to finish the products of die casters into stable, high-quality items through our plating and chemical treatment processes, and we perform plating on many zinc die-cast products daily. If you have any concerns, please feel free to contact us. We will definitely provide some suggestions or insights. 【Plating】 【Chemical Treatment】 【Painting/Printing】 【Polishing/Satin Finish】

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■ Corrosion Prevention for Aluminum Die Casting ADC12: Surface Treatment for Rust Prevention Silvec has extensive know-how in rust prevention treatments for aluminum die casting ADC12 and can provide original technology solutions. ■ Corrosion Resistance and Surface Treatment of Aluminum Die Casting ADC12 Aluminum die casting ADC12 is widely used, accounting for over 90% of production ratios among aluminum die casting alloys, due to its excellent castability, mechanical properties, and machinability. However, its corrosion resistance is relatively poor compared to other aluminum die casting materials, necessitating rust prevention treatments depending on the application. The four representative treatments for rust prevention of aluminum die casting ADC12 are as follows: 1. Plating 2. Anodizing 3. Chemical treatment (trivalent chromate treatment) 4. Cationic electrodeposition coating

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■ Corrosion Prevention Measures for Aluminum Die Casting ADC12: Surface Treatment for Rust Prevention Silvec has extensive know-how in rust prevention treatments for aluminum die casting ADC12 and can provide original technology solutions. ■ Corrosion Resistance and Surface Treatment of Aluminum Die Casting ADC12 Aluminum die casting ADC12 is the most widely used aluminum die casting material, accounting for over 90% of production ratios among aluminum die casting alloys, due to its good castability, mechanical properties, and machinability. However, its corrosion resistance is relatively poor among aluminum die casting materials, and rust prevention treatment may be necessary depending on the application. The representative treatments for rust prevention of aluminum die casting ADC12 include the following four types: 1. Plating 2. Anodizing 3. Chemical treatment (trivalent chromate treatment) 4. Cationic electrodeposition coating

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■ Corrosion Prevention for Aluminum Die Casting ADC12: Surface Treatment for Rust Prevention Silvec has extensive know-how in rust prevention treatments for aluminum die casting ADC12 and can provide original technology solutions. ■ Corrosion Resistance and Surface Treatment of Aluminum Die Casting ADC12 Aluminum die casting ADC12 is widely used, accounting for over 90% of the production ratio among aluminum die casting alloys, due to its excellent castability, mechanical properties, and machinability. However, its corrosion resistance is relatively poor compared to other aluminum die casting materials, and rust prevention treatment may be necessary depending on the application. The four representative treatments for rust prevention of aluminum die casting ADC12 are as follows: 1. Plating 2. Anodizing 3. Chemical treatment (trivalent chromate treatment) 4. Cationic electrodeposition coating

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■ Corrosion Prevention for Aluminum Die Casting ADC12: Surface Treatment for Rust Prevention Silvec has extensive know-how in rust prevention treatments for aluminum die casting ADC12 and can provide original technology solutions. ■ Corrosion Resistance and Surface Treatment of Aluminum Die Casting ADC12 Aluminum die casting ADC12 is widely used, accounting for over 90% of the production ratio among aluminum die casting alloys, due to its excellent castability, mechanical properties, and machinability. However, its corrosion resistance is relatively poor compared to other aluminum die casting materials, necessitating rust prevention treatments depending on the application. The four representative treatments for rust prevention of aluminum die casting ADC12 are as follows: 1. Plating 2. Anodizing 3. Chemical treatment (trivalent chromate treatment) 4. Cationic electrodeposition coating

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This is a case study of a quality issue faced by a customer that was resolved using our plating and surface treatment technology. Case Study: Electroless Nickel Plating on Aluminum Die Casting ■ Company I, an aluminum die casting manufacturer A company that was struggling with poor corrosion resistance of the inner diameter of aluminum die casting products with an electric nickel plating + chrome plating specification contacted us through our website. We proposed electroless nickel plating, and after prototyping with an electroless nickel plating + chrome plating specification, we achieved no white rust formation in the inner diameter after 72 hours in the JIS neutral salt spray test, leading to an order for mass production.

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We will introduce a case where we solved the functional characteristic challenges faced by our customer and were adopted through a VE proposal. Case 1: "VE Proposal" High corrosion-resistant chrome plating "Alon Chrome Plating" for aluminum die-cast materials ■ Connector Company J We received an inquiry regarding the plating of aluminum die-cast (ADC 12) for infrastructure connector housings, with the condition of no white rust occurring after 500 hours of JIS neutral salt spray testing. Among the conditions, there was a requirement not only for "corrosion resistance" but also for "no cracking due to crimping," which necessitated a coating with high ductility. We proposed our original technology, high corrosion-resistant chrome plating "Alon Chrome Plating," and through prototyping and evaluation, we successfully passed the salt spray test for 500 hours without rust and without cracking from crimping, leading to mass production.

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Example: Nickel plating "Solderable Nickel Plating" with soldering strength equivalent to tin plating ■ Related to electronic components, Company N To solder printed circuit boards and components inside a zinc die-cast case, the company visited us due to cost reduction and whisker concerns regarding products with copper plating + nickel plating (for diffusion prevention) + tin plating specifications. We proposed our "Solderable Nickel Plating" for soldering, and after evaluation of the prototype, it led to mass production. This has resolved the issues of cost reduction and whisker concerns.

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Each alloy has different properties. We select a surface modification method suited to the base material to bring out the excellent characteristics of that material in the most economical way.

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IMPA is the research and development office of Silvec. It stands for "Innovative International Multi-purpose Plating & Anodizing," meaning "innovative, international, multi-purpose plating & anodizing."

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【Our One-Stop Service】 ● One-Stop Service ● Procurement from Thailand ● Support for Transfer to Thailand Through long-standing transactions with molding and processing manufacturers, we are able to provide products and parts that include everything from arranging molds and materials to surface treatment, as well as joining or bonding after surface treatment. We can also introduce you to molding and processing manufacturers that have the appropriate equipment and technology for those products. While we can offer one-stop services within Japan, our main focus is on one-stop services from procurement in Thailand.

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【Development Aim and Purpose】 Directly joining metal and resin to achieve high strength and high airtightness 【Key Points】 1. Integrated components of metal and resin 2. Joining through injection molding 3. Joining without the use of screws, bolts, or welding

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Features of Aluminum Die Casting Molten aluminum die casting alloy is poured into a mold under high pressure and formed. Various aluminum die casting alloy materials are produced according to specifications and applications, and advancements in mold technology have made it possible to efficiently produce aluminum die casting products with high dimensional accuracy.

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Features of Zinc Die Casting Zinc die casting has excellent fluidity, allowing for the production of die-cast products with high dimensional accuracy, even for complex shapes and thin-walled products. Additionally, the melting temperature for die casting is lower for zinc die casting (420-450°C) compared to aluminum die casting (670-760°C), resulting in a longer mold life. This makes it a highly productive method, as casting (die casting) can be performed using high-productivity hot chamber machines.

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Our solder wetting coatings consist of four types of plating. 1. Solderable Nickel Plating (Electrolytic Nickel Plating for Soldering) This is an original technology developed by our company, featuring electrolytic nickel plating with solder wetting properties equivalent to tin plating. Characteristics: It has solder wetting properties comparable to tin plating due to electrolytic nickel plating, and since it is nickel plating, it does not generate whiskers, effectively reduces costs, balances appearance and surface hardness with solderability, and can be selected from barrel plating or jig plating. 2. Tin Plating Tin (English name: Tin, chemical symbol: Sn) is a metal with a low melting point of 232°C and excellent solder wetting properties. It is also a noble metal with excellent corrosion resistance, is soft and highly ductile, and has low toxicity. 3. Silver Plating (Matte) We provide high-precision silver plating primarily for industrial purposes, focusing on barrel plating. 4. Copper Plating Copper plating is widely used as a base layer for various types of plating. Particularly due to its excellent electrical conductivity, it has become an essential plating in the electronics field. Both jig and barrel plating methods are available.

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Proposal for Enhancing the Value of Aluminum Aluminum is an excellent metal that is lightweight, strong, easy to process into various shapes, recyclable, and aesthetically pleasing. It is the second most produced metal in the world after iron and is widely used in various industrial products as well as everyday items. Despite its wonderful characteristics, aluminum can also have drawbacks depending on its applications. For example, it is softer and more prone to scratching compared to iron, and it can corrode due to environmental factors. Surface treatment is what compensates for these shortcomings. It can add various properties such as increased hardness, improved corrosion resistance, and enhanced aesthetics. This is how we enhance the value of aluminum. Silvec has been honing its expertise in surface treatment for aluminum in Japan for many years. Because we understand aluminum, we can provide appropriate surface treatments. "Enhancing the value of aluminum" is our role.

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Our company offers two types of matte finishes: chemical matte and shot blasting. Chemical matte: This method chemically finishes the aluminum surface to a matte state. It can create a very fine and uniform roughened surface, which also helps to reduce reflections. Since the surface is created by immersing it in a chemical matte solution, the overall dimensions may decrease. Shot blasting: This method involves selecting media such as iron, SUS, or glass based on the base material and purpose, and applying pressure to impact the surface, creating a uniformly rough and matte appearance. Dimensions may increase as a result.

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At Taishilbeck, there are three types of polishing processes. We have a buff polishing machine in-house. Buff polishing of various aluminum and zinc die-cast materials is possible. (Other types of polishing can be handled by partner companies.) 【Polishing】 Buff polishing, chemical polishing, barrel polishing.

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**Features of ZDC Direct Chromate** 1. At Silvec, we utilize three types of treatments: chromating, belscod treatment, and ZT444 treatment. 2. It has corrosion resistance with no white rust formation after 50 hours of JIS neutral salt spray testing and 24 hours of drying. 3. By eliminating the conventional zinc plating process, we can achieve shorter delivery times, stable quality, and cost reduction. 4. The treatment is performed without applying a base plating on zinc die-cast materials, so there is no change in material dimensions. 5. All products comply with the RoHS directive.

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Regarding the specified chemicals for trivalent chromium-based aluminum conversion treatment There are many types of trivalent chromium-based aluminum conversion treatment chemicals available from various surface treatment chemical manufacturers. Our company selects treatment chemicals after conducting repeated tests with various changes in aluminum types, treatment conditions, and other factors from each surface treatment chemical manufacturer. While there are chemicals that are almost equivalent to those selected by our company, we establish the highest quality chemicals and treatment conditions suitable for our customers' intended use and specified specifications. As a standard for equivalent levels, we consider chemicals that can clear SST72h-RN9.5 or higher with trivalent chromium-based conversion treatment on ADC12 to be at an equivalent level. Since it is die-casting, the results may vary depending on the condition of the casting surface. Therefore, we conducted tests using test pieces that reproduced almost the same casting surface with various chemicals and conditions. Please understand that while there may be other chemicals that can meet the criteria listed below, our company does not test all chemicals.

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Hard Anodizing By hard anodizing aluminum, a highly wear-resistant coating can be obtained. Hard anodizing naturally develops a dark color, and as the film thickness increases, the color becomes darker. For example, with A5052 or A6063 materials, if the ordinary anodized coating has a hardness of about HV200, a hardness of about HV450 can be achieved, which is double that. However, the achievable coating hardness varies depending on the aluminum material. 【Thai Silvec Contact Information】 Office: 038-447-557, 038-447-558, 038-447-566 Thai Direct: 089-938-8207 Japanese Direct: 091-779-4427 E-mail: info@thai-silvec.com 【Japan Silvec Contact Information】 TEL: 048-994-5931 FAX: 048-994-5935 E-mail: info@silvec.co.jp

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Our standard anodizing is done using the sulfuric acid method. The coating is nearly colorless and transparent, which makes it excellent for dyeing effects. When not dyed, it has an appearance very close to aluminum color and is referred to as "natural." Additionally, by dyeing with various dyes, we can achieve a metallic appearance in various colors. For aluminum die-casting alloys of types 10 and 12, the natural color is not a colorless transparent coating but rather a color that resembles a mix of dark gray and brown. This is due to the influence of silicon. Therefore, even for aluminum die-casting alloys of types 5 and 6, it is possible to dye them in intermediate colors. Our company is capable of processing standard anodizing and hard anodizing in accordance with JIS specifications and MIL specifications.

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Zinc Die Casting: Features of D-ZERO Coating We can apply copper + nickel plating at the specified thickness without changing the dimensions of the material. Leave it to us; we can target the specified areas and perform plating without altering the dimensions of the material.

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**Features of Silvec's High-Precision Barrel Plating** Barrel plating for products that are prone to entanglement and deformation In the case of complex shapes or shapes that are prone to entanglement, barrel plating can cause the items to intertwine, leading to deformation, variations in coating thickness, and in some cases, a phenomenon where plating does not deposit on contact areas. With years of expertise, we can achieve high dimensional accuracy and prevent deformation. **Barrel Plating of Aluminum** At that time, plating on aluminum was typically done using jigs, but we developed barrel plating for aluminum materials to reduce plating costs while handling batches of several hundred thousand units each month. **Trivalent Chromium Plating in a Barrel** While chromium plating is generally associated with jig plating, our company can perform trivalent chromium plating using a barrel. Due to its excellent uniform electrowinning properties, chromium can be beautifully deposited even in areas where hexavalent chromium would not adhere. For small parts, this offers cost advantages and allows for high precision plating.

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Features of lubrication plating that can be handled by Silvec: 1. Electroless nickel plating is applied to the substrate, allowing plating on various materials. 2. Compliant with RoHS directives. 3. Excellent wear resistance, low friction coefficient, water repellency, oil repellency, release properties, and slip properties. 4. The color tone of the coating ranges from gray to black.

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Features of solderable nickel plating 1. Achieves solder wetting properties equivalent to tin plating through electro nickel plating. 2. No whisker formation due to being nickel plated. 3. Effective for cost reduction (VA proposal for specification changes from tin plating, solder plating, silver plating, etc.). 4. Balances appearance and surface hardness with solderability. 5. Can be selected from barrel plating or jig (hook) plating depending on the shape.

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Features of "Aluon Plating" Adding lightweight and corrosion resistance to aluminum + desired functions 1. No material selection restrictions as long as it is aluminum 2. Ensures excellent corrosion resistance with a plating thickness of approximately 10μm to 30μm, including the base plating 3. Plating thickness can be adjusted based on the target corrosion resistance 4. The top layer of the plating can be selected from various options such as nickel, tin, silver, gold, and chromium, depending on the application (e.g., soldering, conductivity, wear resistance, clinching, etc.) 5. Achieves high-performance plating without contact marks and cost reduction by using barrel plating based on shape 6. By adjusting the surface condition of the material, it can accommodate a glossy plating appearance to a matte finish with a pearlescent texture.

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Features of Tin-Cobalt Alloy Plating 1. Barrel plating is possible as an alternative to chrome. 2. Although the coating hardness is lower compared to chrome plating, corrosion resistance and strength can be ensured by applying a nickel plating as a base. 3. The coating is resistant to discoloration, similar to chrome. 4. Tin-cobalt plating with good coverage is possible in barrels, even for complex shapes. 5. Complies with RoHS directives. 6. Method: Barrel plating (rotational plating)

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Characteristics of Tin Plating 1. Bright Tin (Yashio/Japan), Semi-Bright Tin Plating (Chonburi/Thailand) 2. High-precision barrel tin plating is possible for products with shapes that are easy to bend and entangle. 3. There is always a possibility of whisker formation. Applying a nickel plating as a base can reduce this occurrence. 4. Method: Barrel plating (rotary plating)

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Characteristics of non-electrolytic nickel plating: 1. The plating thickness is uniform regardless of product shape, allowing for high-quality requirements with dimensional accuracy (5-10% tolerance). 2. Lead-free and compliant with RoHS directives. 3. Corrosion resistance and wear resistance are superior to electroplated nickel. 4. Friction resistance is lower than that of electroplated nickel.

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【Characteristics of Trivalent Chromium Plating】 1. The appearance is a white color similar to hexavalent chromium plating, but when compared, hexavalent chromium appears slightly bluish, while trivalent chromium looks darker. 2. The appearance of the underlying nickel plating is directly reflected in the appearance after trivalent chromium plating. For example, if you chrome plate a product with glossy nickel plating that has been buff-polished, you can achieve a mirror-like finish. Similarly, if you buff-polish the material and then chrome plate it with velour nickel plating, the velour's matte texture will remain visible. 3. Complies with RoHS directives. 4. It has good uniform electrocatalytic properties, allowing trivalent chromium plating to cover areas with difficult shapes for electricity to reach. 5. Barrel plating (rotational plating) is possible. 6. Methods: Barrel plating (rotational plating), using fixtures (static plating).

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