The technical site "Chrome Plating and Roll Navigation" has been launched.

Consistent production from roll manufacturing to surface treatment and polishing! Reducing outsourcing efforts and delivering high-quality products to our customers!

Our company designs and manufactures various metal rolls used in film and sheet extrusion machines, slitters, stretchers, coater machines, and paper-related machinery. Since we can perform all plating and polishing processes in-house after roll production, we are able to deliver high-quality products to our customers. Are you struggling with the hassle of outsourcing to different companies for various processing tasks, along with managing delivery times and quality control? By placing orders with our company, which offers integrated production, you can easily manage delivery schedules and respond quickly in case of any issues. 【Equipment Owned】 Chrome Plating Tanks: 1.3m(W)×4.5m(L)×5.8m(H) 1.7m(W)×4.5m(L)×4.7m(H) and others, totaling 10 tanks Polishing Machines: Cylindrical polishing, cylindrical vertical polishing, cylindrical buff polishing, inner diameter buff polishing, double-headed buff polishing, flexible buff polishing Roll Processing Equipment: CNC precision lathe, general-purpose lathe machining center, radial drill vertical milling machine, welding equipment dynamic balancing machine *For details on processable sizes, please contact us.

• Paper Converting Machinery

Leave everything from the production of all types of rolls to surface treatment to us!

Leave all aspects of manufacturing and surface treatment of various rolls used for shaping and secondary processing of films and sheets, such as extruders, coaters, printers, and stretchers, to us! We can sketch, CAD design, and manufacture rolls currently in use. We will also investigate and reproduce surface treatments. 【Features】 ◆ Capable of processing micron-level G polishing required for coater rolls and others ◆ Vertical polishing with a super mirror finish of 0.05S or less is also possible ◆ Surface treatments such as Tef-Lock treatment to prevent dirt adhesion and Cro-Amol treatment for high hardness are also available.

• Extrusion Machine
• Coater

It is possible to consistently produce heat transfer circulation rolls, which are essential for film manufacturing and lamination processing lines, from iron core production to surface treatment.

A preheating and cooling roll is a roll that manages the surface temperature by circulating a heat medium such as water or oil inside the roll, serving the purpose of heating or cooling substrates like films and sheets. There are different internal structures, including single-tube type, double-tube type, and triple-tube type. The single-tube type has a hollow interior, and depending on whether the inlet and outlet are the same or different, it uses either a single or double rotary joint. While the single-tube type is cheaper to manufacture due to its simple structure, it has the drawback that as the roll size increases, it requires more heat medium for preheating and cooling, and the heat medium tends to stagnate, leading to uneven surface temperatures. The double-tube and triple-tube types have an internal tube placed inside the outer cylindrical pipe of the roll, allowing the heat medium to flow through the gaps between the pipes. This structure can limit the amount of heat medium to the flow paths, and since the heat medium flows through the gap between the outer and inner tubes, it can efficiently preheat and cool with less variation in surface temperature. If the inlet and outlet are different, it is structured as a double-tube type; if they are the same, it is structured as a triple-tube type.

• Contract manufacturing

This is a composite surface treatment that has the hardness and wear resistance of hard chrome plating combined with the non-stick and release properties of PTFE. It is suitable for sliding parts where release properties are required.

This is a composite plating of hard chrome plating and fluororesin known by trademarks such as Teflon. It combines the high hardness and wear resistance of hard chrome plating with the non-stick and release properties of fluororesins. **Features** - **Release Properties and Wear Resistance** The excellent non-stick properties, low friction coefficient, and self-lubricating characteristics of fluororesins, along with the low friction coefficient of hard chrome plating, provide superior release properties and wear resistance compared to standard chrome plating and other fluororesin composite platings. - **Hardness** Since the base is chrome plating, it has a hardness of approximately Hv850. - **Heat Resistance** It is below the melting point of fluororesins (327°C). Continuous use is recommended around 250°C. - **Safety** It complies with the standards for utensils and containers based on the Ministry of Health, Labour and Welfare Notification No. 370, making it suitable for applications where food comes into direct contact with the Teflon surface. *Analysis experiments have been conducted by the Japan Food Analysis Center.* - **Processing Characteristics** Due to the low processing temperature of about 200°C, there is minimal thermal impact on the material. - **Maintenance-Free, Long Lifespan**

• Other surface treatment equipment
• Surface treatment contract service

The durability and heat resistance of non-stick, high-release plating Tef-Lock have been significantly improved, making it possible to use it at 300℃!

- Our unique high-performance composite surface treatment combines the high hardness, wear resistance, and electrical conductivity of hard chrome plating with the non-stick properties, lubricity, low friction, and release properties of fluororesin. - Tef-Lock α maintains a stable surface without decomposition of the resin component even in high-temperature environments of 300°C, demonstrating excellent durability (conventional Tef-Lock has a heat resistance temperature of around 250°C). - In friction tests at high temperatures of 300°C, Tef-Lock α shows 2.4 times the durability of conventional Tef-Lock and approximately 7 times the durability compared to typical nickel plating combined with fluororesin.

• Resin mold
• Food Conveyor Equipment
• Filling and bottling machines

Achieve maintenance of lubricity and improved load-bearing capacity and durability with micro-crack plating + PTFE!

We have a product called "Tef-Lock," which is our original plating that incorporates PTFE into hard chrome plating. This is a composite surface treatment that combines the high hardness and wear resistance of chrome plating with the low friction and lubrication properties of PTFE. However, in high-load environments where chrome plating may wear away, it has been difficult to maintain low friction and lubrication. However, we have developed "Tef-Lock Fine" by impregnating PTFE into our original Cro-Fine (high-hardness micro-crack chrome plating) coating, which solves these issues. 【Features】 ■ Hardness increased compared to conventional Tef-Lock (HV850 → HV900) ■ Increased crack density and higher PTFE content compared to conventional Tef-Lock ■ Maintains low friction under high loads and exhibits excellent wear resistance *For more details, please refer to the related links or feel free to contact us.

• Surface treatment contract service
• Other metal materials

We have successfully achieved high corrosion resistance that significantly exceeds 24 hours in the Cass test through the hybridization (composite) of plating films and inorganic materials!

Hybrid chrome is a technology that enhances the functional properties of chrome plating by hybridizing (compositing) chrome plating films with inorganic materials. Our company has successfully achieved corrosion resistance that significantly exceeds 24 hours in the Cass test through hybridization with glassy materials. By sealing the micro-cracks, which are a weakness of chrome plating, corrosion resistance has been greatly improved, and at the same time, it also prevents the intrusion of foreign substances into the cracks.

• plastic

The hardness is approximately twice that of hard chrome plating (Hv1800)! Introducing the world's first amorphous chrome plating.

The world's first amorphous chrome "Cloamore" is a chromium-based alloy coating that contains 2-4% carbon, boasting ultra-high hardness and excellent wear resistance.

• Other semiconductor manufacturing equipment
• Surface treatment contract service

As the new year begins, I would like to extend my heartfelt congratulations on your continued prosperity. I sincerely appreciate your exceptional support throughout the year. This is the STJ Group (Santelecom Japan, STJ Rentec). Now, I am pleased to announce that we will be opening our "Transceiver & Smartphone Rental Shop" simultaneously at three locations nationwide on January 26 (Monday)! ■ List of Services to be Offered - Same-day pickup/return of rental equipment - Usage explanations and demonstrations of rental equipment - Wireless solutions consultation desk - Mobile BPO service counter As a special promotion to celebrate the opening of the rental shop, we are currently running a special price campaign for picking up rental equipment at the shop! For more details, please contact us!

【Notice of Year-End and New Year Holidays】 Thank you very much for your continued support. Our company will be closed for the year-end and New Year holidays as follows: Holiday Period: Saturday, December 27, 2025 – Sunday, January 4, 2026 Please note that inquiries and orders received during the holiday period will be addressed sequentially starting from Monday, January 5, 2026. We apologize for any inconvenience this may cause and appreciate your understanding.

We would like to inform you about our participation in the IT Trend EXPO 2026 Spring. 《Exhibition Information》 With the concept of "New encounters will change tomorrow's work," one of the largest online exhibitions in the industry will be held. NTT TechnoCross will exhibit in the Human Resources Comprehensive category. We have prepared numerous discussions and sessions featuring special guests who are active on television, allowing even those who are usually busy to efficiently gather information on products and services related to IT and DX. Additionally, the first 10,000 participants will receive a 500 yen Amazon gift card. Please apply early. 《Exhibition Overview》 March 3 (Tuesday) to March 7 (Saturday), 2026, online (free: pre-registration required) 《Participation Application》 https://it.expo.it-trend.jp/key/opl7kgdj *Please apply (free) from the "Receive Ticket / Proceed to Participation Registration" link at the above URL.

The TV commercial "What Will You Do in the New Era?" featuring model and actress Akane Horita will begin airing on December 26, 2025. This work expresses the desire of Tokei Densan to respond to the diverse needs of various industries in today's society, where new technologies, such as the expansion of the AI market, are competing with each other, and to nurture and blossom our customers' futures. Please pay attention to Akane Horita, who is dressed in stylish outfits, listening to the concerns of the target audience and offering support. # CM Overview Title: "What Will You Do in the New Era?" (30 seconds / 15 seconds) CM URLs 30 seconds: https://youtu.be/y_lMs0HRj3w 15 seconds: https://youtu.be/egpzMfh8Kok

Thank you very much for your continued support. We would like to inform you that our company will be closed for the year-end and New Year holidays as follows: Year-end and New Year holiday period: December 27, 2025 (Saturday) to January 4, 2026 (Sunday) We apologize for any inconvenience this may cause and appreciate your understanding. *Please note that inquiries made through our website will also be responded to after January 5, 2026 (Monday).