KOYAMA CO., LTD. Product Lineup

In machining environments, oil stains such as cutting oil are common. Even with hand washing, they are difficult to remove, raising concerns about decreased work efficiency and skin burden. Therefore, we recommend the "industrial hand cleaner," which is environmentally friendly and can effectively remove stubborn oil stains. 【Usage Scenarios】 * Various factories: Removing oil stains from grease and tar * Printing factories: Removing oil stains from ink and machine maintenance * Gas stations and auto repair shops: Removing stains from grease and oil * Onboard ships and construction sites: Removing stains in areas without water 【Benefits of Implementation】 * Easily removes oil stains that could not be removed by hand washing alone, improving work efficiency. * Reduces skin burden and improves the work environment. * As an environmentally conscious product, it can be used with peace of mind. * Helps keep washing areas clean and contributes to improving workplace conditions.

• others

In medical settings, stains from blood and bodily fluids are inevitable. Traditional hand cleaners often lacked sufficient cleaning power or were too harsh on the skin, making it difficult to find products that meet the needs of the field. Therefore, our company has developed a safe and highly effective hand cleaner that meets the stringent demands of medical environments. 【Usage Scenarios】 * Operating Room: Removes blood stains after surgery. * Patient Room: Cleans stains from patients' blood and bodily fluids. * Laboratory: Frequent contact with blood during blood tests and other procedures. * Emergency Room: Requires quick removal of blood stains in emergencies. * Nurses: Often come into contact with blood and bodily fluids while caring for patients. 【Benefits of Implementation】 * Less skin irritation: By using natural high-grade alcohol-based surfactants, it prevents skin damage and creates a comfortable working environment. * Reduced environmental impact: By adopting biodegradable scrubs, we also consider environmental sustainability. * Maintains a clean workplace: Easily soluble in water and does not clog drainage pipes, ensuring a clean workplace environment.

• others

In paint factories, it is common for oil and paint stains to get on hands, and many people may struggle with cleaning. Traditional hand cleaners, while powerful in cleaning, can be harsh on the skin and raise concerns about their environmental impact. Therefore, our company has developed an environmentally friendly industrial hand cleaner that balances cleaning power and safety. 【Usage Scenarios】 * Cleaning oil and paint stains in paint factories * Hand washing during work in the paint booth * Hand washing during finishing work after painting * Preventing skin irritation after painting work 【Benefits of Implementation】 * Using environmentally friendly materials reduces environmental impact. * Less irritation to the skin helps prevent hand dryness. * Strong cleaning power effectively removes stubborn oil stains. * Easily dissolves in water, eliminating concerns about clogging drainage pipes.

• others

Dear agricultural workers, are you struggling with stubborn soil stains? While traditional cleaners may have difficulty removing such stains, our industrial hand cleaner can effectively eliminate them while being gentle on your skin and environmentally friendly. 【Usage Scenarios】 * After farming: Dirt, mud, and fertilizer stains on hands. * Maintenance of agricultural machinery: Oil and mud stains are hard to remove, making cleaning difficult. * Harvesting: Juice from fruits and vegetables gets on hands. * Indoor greenhouse work: Dust and pesticides accumulate. * Livestock work: Animal waste and dirt get on hands. 【Benefits of Implementation】 * Prevents skin irritation and creates a comfortable working environment: Gentle ingredients ensure safety even during long hours of work. * Reduces cleaning time and improves work efficiency: Powerful cleaning ability allows for quick removal of dirt. * Reduces environmental impact: Uses biodegradable scrubs to minimize effects on the environment.

• others

In the fishing industry, the dirt from fish oil on hands and fingers is a serious problem. Many people struggle with stubborn stains that are difficult to remove with regular hand cleaners, especially in situations where washing with water is not possible. Our industrial hand cleaner, which contains biodegradable scrubs, is environmentally friendly and effectively removes fish oil stains, making it the ideal hand cleaner for fishing sites. [Usage Scenarios] * Work on fishing boats: Removing dirt from hands and fingers caused by fish oil and fish slime, especially in situations where washing with water is not possible. * Processing areas for catches: Removing dirt from hands and fingers caused by fish oil and fish blood, especially in situations where washing with water is not possible. * Maintenance of fishing gear: Removing dirt from fishing gear caused by fish oil and fish slime. * Cleaning the hull: Removing dirt from the hull caused by fish oil and fish slime. [Benefits of Implementation] * Reduction of skin irritation: With less irritation to the skin, it helps reduce skin problems. * Improved work efficiency: By shortening the time spent removing dirt, work efficiency is enhanced. * Maintenance of a clean working environment: Keeping the washing area clean helps maintain a hygienic working environment. * Reduction of environmental impact: Using biodegradable scrubs helps reduce environmental impact.

• others

In automobile manufacturing, forgetting to tighten screws or incomplete tightening is a serious issue that can lead to product quality defects and safety problems. Our "Screw Tightening Forgetting Prevention Counter" solves these issues when used in combination with electric screwdrivers, contributing to improved production efficiency. 【Usage Scenarios】 - Screw tightening processes on automobile manufacturing lines - Processes using multiple types of screws - Processes requiring complex screw tightening patterns - Processes experiencing quality defects or safety issues due to forgotten screw tightening 【Benefits of Implementation】 - Reduces the occurrence of quality defects caused by forgotten screw tightening, contributing to improved product quality. - Alleviates the burden on workers and achieves improved work efficiency. - Prevents product damage or accidents caused by incorrect screw tightening, contributing to enhanced safety. - Promotes automation and labor-saving in production lines, contributing to cost reduction.

• others

● Prevents miscounting by rotation count ● If a long screw is mistakenly tightened, the driver stops to prevent damage to the workpiece ● Equipped with a temporary tightening counter function ● Automatically switches to the final tightening mode after temporary tightening with the sequence function ● Torque control function allows for tightening of screws with eight different torque settings using a single driver ● Can connect to a PC via LAN (up to 254 units) to save setting information and tightening history ● Outputs data in CSV format for "tightening pass/fail," "torque output level," "rotation count," and "date and time" ● Optional BMP output of tightening torque waveform is available *For more details, please refer to the catalog. For inquiries, please contact Koyama Co., Ltd.

• Other FA equipment

In the manufacturing of electrical and electronic devices, forgetting to tighten screws or incomplete tightening is a serious problem that leads to a decline in product quality and the occurrence of defective products. Our "Screw Tightening Forgetting Prevention Counter" solves these issues when used in combination with an electric screwdriver, contributing to improved assembly accuracy. 【Usage Scenarios】 - Assembly lines for electrical and electronic devices - Automation of screw tightening tasks - Complex assembly processes using multiple types of screws - Improving efficiency in tasks that relied on manual labor - Prevention of defective products due to forgotten tightening 【Effects of Implementation】 - Suppresses the occurrence of defective products due to forgotten tightening, contributing to improved product quality. - Reduces the burden on workers and improves work efficiency. - Suppresses variations in tightening torque, leading to stabilization of product quality. - Achieves resolution of labor shortages and cost reduction through automation.

• others

In the manufacturing of medical devices, precise screw tightening is a crucial process that affects the quality and safety of the products. Human errors such as forgetting to tighten screws or incomplete tightening can lead to product malfunctions or serious accidents. Our "Screw Tightening Forgetting Prevention Counter" is a groundbreaking control device that works in conjunction with electric screwdrivers to solve these issues. 【Usage Scenarios】 - Assembly processes of precision parts in medical device manufacturing sites - Processes with a high frequency of manual screw tightening - Processes with a high risk of quality defects due to forgotten or incomplete screw tightening - Processes involving multiple workers 【Benefits of Implementation】 - Significant reduction in quality defects caused by forgotten or incomplete screw tightening - Improved work efficiency and reduced work time - Reduced burden on employees and enhanced safety of operations - Stabilization of product quality and increased reliability

• others

In aircraft manufacturing, forgetting to tighten screws is a serious safety issue. Our "Screw Tightening Forgetfulness Prevention Counter" contributes to safe product manufacturing by preventing forgotten or incomplete screw tightening when used in combination with electric screwdrivers. 【Usage Scenarios】 - Screw tightening tasks are critical processes in aircraft manufacturing, including airframe assembly, engine assembly, and interior assembly. - Human errors leading to forgotten or improperly tightened screws can threaten product safety. - Improving efficiency and quality in screw tightening tasks within complex processes. 【Effects of Implementation】 - Prevent accidents and product defects caused by forgotten or improperly tightened screws, enhancing safety. - Reduce manufacturing costs through improved work efficiency and stabilized quality. - Alleviate employee burden and enhance focus on tasks.

• others

In the manufacturing of construction machinery, forgetting to tighten screws or incomplete tightening directly leads to a decline in product quality and safety issues. Our "Screw Tightening Forgetting Prevention Counter" is a product designed to solve these problems by being used in combination with electric screwdrivers, thereby improving work efficiency and quality management. 【Usage Scenarios】 - Assembly lines for construction machinery - Processes with frequent screw tightening tasks - Processes involving multiple workers - Processes where quality defects or safety issues due to forgotten or incomplete tightening are likely to occur 【Benefits of Implementation】 - Prevents quality defects and safety accidents caused by forgotten screw tightening, contributing to improved product quality. - Enhances work efficiency, leading to increased productivity. - Reduces variability in tightening times, achieving standardization of work. - By controlling multiple drivers, it improves work efficiency and quality management.

• others

In furniture manufacturing, quality defects and delays in delivery due to forgotten screw tightening are significant challenges. Our "Screw Tightening Forgetting Prevention Counter" helps prevent forgotten or incomplete screw tightening when used in combination with an electric screwdriver, contributing to improved assembly accuracy. 【Usage Scenarios】 - Assembly processes in furniture manufacturing sites - Occurrence of quality defects and delivery delays due to mistakes in screw tightening - Improvement of work efficiency in complex assembly processes 【Effects of Implementation】 - Helps suppress the occurrence of quality defects due to forgotten screw tightening, contributing to improved product quality. - Achieves reduced assembly time and improved work efficiency. - Aids in cost reduction and adherence to delivery schedules by minimizing human errors.

• others

In the robot assembly process, forgetting to tighten screws or incomplete tightening can lead to serious issues such as decreased product quality and operational failures. Our "Screw Tightening Forgetting Prevention Counter," when used in combination with an electric screwdriver, addresses these problems and contributes to improving the operational accuracy of robots. 【Usage Scenarios】 - Robot assembly process - Automation of screw tightening tasks - Cases requiring complex screw tightening patterns - Occurrence of quality defects due to forgotten tightening - Improvement of operational accuracy 【Effects of Implementation】 - Significant reduction in quality defects caused by forgotten screw tightening - Stable operation of robots due to improved operational accuracy - Increased productivity through improved work efficiency - Prevention of troubles caused by human error - Improvement of the working environment

• others

The safe operation of railway vehicles requires the secure tightening of each individual component. However, human errors such as forgetting to tighten screws or incomplete tightening can lead to serious accidents. Therefore, our "Screw Tightening Forgetting Prevention Counter," when used in combination with an electric screwdriver, effectively prevents these mistakes and contributes to safe operations. 【Usage Scenarios】 - Manufacturing and repair sites for railway vehicles - Screw tightening tasks on vehicle assembly lines - Decreased safety due to human errors such as forgetting to tighten screws or incomplete tightening

• others

The "Straight Tube LED Lamp" is an LED lamp that can be directly installed in fixtures with a G13 base (R17d base for type 110). It can reduce power consumption while providing brightness almost equivalent to that of fluorescent lamps, achieving a cost reduction of about 40% per unit over one year. Additionally, its lifespan is approximately five times longer than that of standard fluorescent lamps, requiring less frequent replacements, and it emits very little ultraviolet light, which attracts insects, helping to keep the lighting fixtures clean. 【Features】 ■ Long lifespan ■ Approximately 40% reduction in electricity costs ■ Emits very little ultraviolet light *For more details, please refer to the catalog. For inquiries, please contact Koyama Co., Ltd.

• LED

The "IRLDFL21BH" is a security light that enhances safety at night. It is compatible with 100-242V and has a long lifespan due to its LED technology, reducing the hassle of lamp replacement. Furthermore, it has low insect attraction, which reduces maintenance efforts. 【Features】 ■ Long lifespan ■ Significant reduction in electricity costs ■ Low insect attraction *For more details, please refer to the catalog. For inquiries, please contact Koyama Co., Ltd.

• LED

The "Area Light" is an LED lighting solution for outdoor parking lots that can uniformly illuminate an area of 40 meters square. It boasts excellent durability and a slim design that takes into account strong winds from typhoons and other weather conditions. It reduces CO2 emissions by up to 80% and, through its unique optical lens and reflector design technology, illuminates only the targeted space, preventing light pollution to neighboring areas. 【Features】 ■ Rated lifespan of 50,000 hours ■ Designed for outdoor parking lots ■ Excellent durability ■ Slim design *For more details, please refer to the catalog. For inquiries, please contact Koyama Co., Ltd.

• LED

The "High Ceiling LED Lamp" is an energy-saving LED lamp designed as a replacement for traditional mercury lamps for high ceilings. With its high power, it ensures adequate illumination even in high ceilings, lights up instantly, and further achieves energy savings with frequent on/off operation. It has a lifespan approximately three times longer than that of mercury lamps, reducing the hassle and cost of replacing lamps installed at high locations. Additionally, it has low insect attraction properties, making it hygienic. 【Features】 ■ For high ceilings ■ Energy-saving ■ Long lifespan ■ Compatible with 100–242V ■ Hygienic *For more details, please refer to the catalog. For inquiries, please contact Koyama Co., Ltd.

• LED

We would like to introduce the "fastening components" that we handle. We offer standard and custom products tailored to various industrial applications, including automotive parts, medical devices, nuclear, home appliances, and welfare equipment. Additionally, we are committed to proposing fastening technologies, including value analysis (VA). Please feel free to contact us when you need assistance. 【Product Lineup】 ■ Screws ■ Bolts ■ Washers ■ Nuts ■ Rivets ■ Plastic Fasteners *For more details, please download the PDF or feel free to contact us.

• bolt

当社で取り扱っている「樹脂切削・成型品」についてご紹介いたします。 インジェクション成形をはじめ、RIM成形や、各種ゴム成形品、真空・圧空 成形、押出し成形など、多種多様な成形品をラインアップ。 また、数量・大きさ・形状により適切な成形方法をご提案いたします。 ご用命の際は、お気軽に当社までお問い合わせください。 【ラインアップ(一部)】 ■インジェクション成形 ■RIM成形 ■各種ゴム成形品 ■真空・圧空成形 ■押出し成形 ※詳しくはPDFをダウンロードしていただくか、お気軽にお問い合わせください。

• Resin processing machine

We would like to introduce the "metal processed products" that we handle. "Precision machined parts" can accommodate plating and painting, and we can source from overseas manufacturers (China, Vietnam, etc.) in addition to domestic manufacturers. Additionally, we can propose the best manufacturing methods using various techniques such as "press and sheet metal processing," "die casting, lost wax, and gypsum casting," and "MIM molding and sintering," as well as "extrusion and drawing." 【Features】 <Precision Machined Parts> ■ NC lathe processing, machining, milling, etc. ■ Materials: Steel, SUS, aluminum, copper, titanium, and others ■ Quantity: Can accommodate from 1 to tens of thousands ■ Can accommodate plating and painting ■ Sourcing from overseas manufacturers (China, Vietnam, etc.) is also possible *For more details, please download the PDF or feel free to contact us.

• Other metal materials

We would like to introduce the "logistics equipment, packaging materials, tools, and consumables" that we handle. We offer a wide range of items necessary for manufacturing sites and warehouse operations. 【Lineup (partial)】 ■ Electric screwdrivers, torque wrenches ■ Various tools ■ Measuring instruments ■ Soldering peripherals ■ Adhesives, sealants, tapes ■ Dispensers ■ Cardboard, dump boxes ■ Packaging materials (such as stretch film) We have a track record of producing custom cushioning materials tailored to our customers' products. We also accept requests for made-to-order items.

• Packaging materials

We would like to introduce the "Electrostatic Control Products and Cleanroom Supplies" that we handle. We offer a lineup of products from manufacturers such as Achilles, Azone, Sakae, Vessel, Hozen, and Hakko, as well as Gardner. Please feel free to contact us when you need assistance. 【Manufacturers We Handle (Partial)】 ■ Achilles ■ Azone ■ Sakae ■ Vessel ■ Hozen *For more details, please download the PDF or feel free to contact us.

• Anti-static products

◎ There are local subsidiaries in the following countries! 　▶▶ Philippines, Shanghai, Hong Kong, Vietnam (in order of establishment) ◎ The local subsidiaries serve as points of contact, allowing direct communication with the factories! 　▶▶ They are within a distance that allows for factory visits, providing peace of mind. ◎ Many local factories are either Japanese-owned or well-managed by Japanese standards! 　▶▶ This alleviates concerns about quality and delivery times. ◎ Semi-local procurement is also possible! 　▶▶ By supplying goods exported from Japan through the local subsidiaries, it contributes to increasing the local procurement rate.

• Other motors

● This is a control device designed to be used in combination with an electric screwdriver to detect and prevent "forgotten screw tightening (human error)" and "incomplete screw tightening." ● It automatically measures the screw tightening time, making it easy to set up. (Manual settings allow for precise adjustments.) ● With the second timer setting, it can stop the screwdriver's rotation. (It alerts you when a long screw is mistakenly tightened.) ● It can memorize eight different screw tightening patterns and perform screw tightening by combining them sequentially. ● It is equipped with various I/O terminals, allowing for connection with automated machines. ● Even if multiple screwdrivers are used, you can increase the number of units through a daisy chain and control the screwdrivers in the order of operation. * For more details, please refer to the catalog. For inquiries, please contact Koyama Co., Ltd.

• Weighing Control

The "tascal" can enhance the efficiency of transportation tasks by retrofitting an electric assist unit to your existing cart. *Please note that installation may not be possible depending on the specifications of the cart. For more details, please contact us. 【Product Features】 ■ The grip with built-in sensors detects the direction and strength of the user's pushing and pulling, allowing the motor to respond delicately and smoothly. It can be operated smoothly even in situations that require maneuverability, such as between shelves or in narrow aisles, improving transportation efficiency. ■ High safety → Equipped with three reassuring functions for emergencies: - Emergency stop switch - Casters with stoppers - Safety brake function (brakes will engage if speed exceeds 6 km/h on flat ground or downhill) ■ These four components can be retrofitted! - Sensor grip - Battery box - Assist caster - Driver box 【Demonstrations are also available.】

• Trolley

Koyama Co., Ltd. is a specialized trading company that handles a wide range of industrial materials, including screws, cold-formed parts, springs, and pressed parts. We offer a diverse array of products such as fastening components, various metal processed products, and resin cutting and molding products. Additionally, we also provide our original product, the "Screw Tightening Reminder Counter." 【Business Activities】 ■ Screws, cold-formed parts, springs and pressed parts, precision machined parts, adhesives, sealants, machine tools, labor-saving equipment, design and development of AGVs and peripheral equipment, precision molded products, static electricity countermeasures, development and sales of environmental improvement products, electronic components, connectors, wire and harness processing. *For more details, please refer to our catalog or contact Koyama Co., Ltd.

• Transport and handling robots

- All wiring from a cross-sectional area of 0.08mm² to 6mm² can be connected, and the terminal spacing can be selected from 2.5mm to 10.16mm. - If necessary, the wiring connection direction, coupling direction, and plug insertion direction can be changed. - This product is designed based on international standards such as IEC60998, IEC61984, UL1059, UL486E, and CSA C22.2 No.158. *For more details, please refer to the catalog. For inquiries, please contact Koyama Co., Ltd.

• Terminal Blocks

Different sizes of protruding surfaces absorb and reduce vibrations, demonstrating the best vibration-damping effect. ● Prevents various vibrations such as low vibration, high vibration, low frequency, and high frequency. ● Recommended for oil resistance and weather resistance. ● Also effective for noise prevention and earthquake measures! ● Ensures stable installation of equipment. ● No anchor bolts required. ● Allows for long-term use. *For more details, please refer to the catalog or contact Koyama Co., Ltd.

• Other safety and hygiene products

● This is a non-silicone, silicone-free type of release film that does not use silicone. ● Release processing can be done on one side or both sides. ● It has been treated for static electricity, which reduces dust attraction due to release charging. ● It can also suppress the occurrence of outgassing and ion contamination. *For more details, please refer to the catalog. For inquiries, please contact Koyama Co., Ltd.*

• Adhesive tape

Reliable screw tightening with a hands-on check! It counts the number of times the torque is increased and alerts you with a buzzer sound when the set number of screws tightened is reached. *For more details, please refer to the catalog. For inquiries, please contact Koyama Co., Ltd.

• driver

●Environmentally friendly and suitable for recycling. ●Economical with a reasonable price that is easy to obtain. ●Excellent print suitability that works with various printers. ●Compliant with RoHS. *For more details, please refer to the catalog. For inquiries, please contact Koyama Co., Ltd.

• Other consumables

In the interior design of railway vehicles, a balance between aesthetics and functionality is required. In particular, safety and durability are crucial, and high quality is demanded for interior components. Additionally, cost is an important factor, and efficient manufacturing methods are sought. Achilles Teflon, through RIM molding, achieves "large-scale molded products" and "freedom of design" without being constrained by the limitations of traditional injection molding or vacuum and pressure molding. This expands the possibilities for interior design in railway vehicles and enables the realization of high-quality interior components at a lower cost. 【Application Scenes】 - Interior components such as seats, walls, and ceilings of railway vehicles - Interior components with high design quality - Large and complex-shaped interior components 【Effects of Implementation】 - Increased design freedom - Cost reduction - Realization of high-quality interior components

• plastic

In the construction machinery industry, there is a demand for large components that balance product durability and design. Particularly for parts used in harsh environments, high impact resistance and weather resistance are crucial. Traditional molding methods may impose constraints on design flexibility and cost. Achilles Teflon RIM molding addresses these challenges. 【Application Scenarios】 - Large exterior parts for construction machinery - Interior parts - Various covers 【Benefits of Implementation】 - Improved design flexibility - Cost reduction - Achievement of high durability

• plastic

In the medical device industry, there is a demand for miniaturization, lightweight design, and high precision of products. Particularly for medical devices that support patient safety and accurate diagnosis and treatment, the precision of component shapes and durability are crucial. Traditional molding methods have limitations in design flexibility and cost, but our large RIM molded products address these challenges. 【Application Scenarios】 - Precision medical device components - Complex-shaped medical device housings - Medical devices requiring durability 【Benefits of Implementation】 - Improved design flexibility - Cost reduction - Realization of high-quality products

• plastic

In the automotive industry, reducing vehicle weight is a crucial challenge for improving fuel efficiency and reducing CO2 emissions. To achieve weight reduction, it is essential to change the materials of components and reconsider their structures. Achilles Teflon's RIM molding allows for more flexible designs compared to traditional injection molding, enabling shape designs that contribute to weight reduction. This allows for greater design freedom, balancing lightweight construction with aesthetic appeal. 【Application Scenarios】 - Automotive parts (interior, exterior) - Parts that require weight reduction - When wanting to enhance design flexibility 【Effects of Implementation】 - Improved fuel efficiency due to weight reduction - Increased design flexibility - Potential cost savings

• plastic

"We want to achieve better design at a lower cost." Achilles Teflon responds to such requests from designers and engineers. By adopting RIM molding, it realizes numerous advantages such as "larger molded products" and "freedom of design" without being constrained by the limitations of conventional injection molding or vacuum/pressure molding. Additionally, unlike standard injection molding, Achilles Teflon offers three types to choose from based on application, expanding new possibilities for product design. *For more details, please refer to the catalog. For inquiries, please contact Koyama Co., Ltd.*

• plastic

●Electric control type for chemical and mercury recovery ●Usable in clean rooms and pharmaceutical factories ●Designed for mercury recovery *For more details, please refer to the catalog. For inquiries, please contact Koyama Co., Ltd.

• Industrial Vacuum Cleaners

●This is an explosion-proof and fire-proof vacuum cleaner certified by an approved testing laboratory, in accordance with legal regulations. ●It can also be used in clean rooms and pharmaceutical factories. ●Regarding static electricity measures, it is grounded through the suction inlet, hose, and main body, allowing even slight static electricity to dissipate quickly. *For more details, please refer to the catalog. For inquiries, please contact Koyama Co., Ltd.*

• Industrial Vacuum Cleaners

★We use biodegradable scrubs (crystal cellulose) as raw materials, taking into consideration environmental aspects and safety. ★It contains a special scrub (a scrub that biodegrades in soil and water) that effectively removes oil stains, carbon, ink, and other residues stuck between fingerprints and under nails. ★The special scrub is relatively light and easily washed away by water, preventing accumulation in wash areas or clogging of drainage pipes, keeping the workplace clean. ★It is a hand cleaner made from natural high-grade alcohol-based surfactants that are gentle on the skin. *For more details, please refer to the catalog. For inquiries, please contact Koyama Co., Ltd.*

• Cleaning agents