三豊精工 List of Products and Services

Our company supplies various assembled sub-assembly units, including automotive seat frames, cameras, VTRs, copiers, and other OA equipment frames, to our customers. Additionally, our strength lies in the technical know-how we possess in general industrial products, including metal processing, resin molding, sewing and cutting processing, surface treatment, and heat treatment, gained through our past achievements. Please feel free to consult us if you have any concerns. 【Our Features】 ■ Price competitiveness through a unique network, including overseas bases ■ Total support for customer requests in collaboration with over 300 partner companies ■ Obtained ISO9001 and ISO14001 certifications, contributing to quality improvement and environmental sustainability *For more details, please download the PDF or feel free to contact us.

• Interior parts
• Contract manufacturing
• Other PCs and OA equipment

Our company supplies various assembled sub-assembly units such as automotive seat frames, cameras, VTRs, and frames for office automation equipment like copiers to our customers. Additionally, our strength lies in the technical know-how we possess in general industrial products due to our past achievements in metal processing, resin molding, sewing and cutting processing, surface treatment, and heat treatment. Please feel free to consult us if you have any concerns. 【Our Features】 ■ Price competitiveness through a unique network, including overseas bases ■ Total support for customer requests in collaboration with over 300 partner companies ■ Acquired ISO 9001 and ISO 14001 certifications, contributing to quality improvement and environmental sustainability *For more details, please download the PDF or feel free to contact us.

• Interior parts
• Contract manufacturing
• Other PCs and OA equipment

Mitoyo Seiko Co., Ltd. provides a variety of products that serve as the foundation for industry and daily life, including automotive-related parts, OA equipment, communication devices, and various assembled products (assembly units), as well as screw-related components. Additionally, as glow-in-the-dark products, we can also produce keychains, magnets, and stickers. Since they can be obtained from pigments, they can be applied to various materials and manufacturing methods. 【Case Overview】 ■ Product Name: Keychains, Magnets, Chains, Stickers ■ Materials: Resin, Acrylic, PP, PVC ■ Manufacturing Methods: Molding + UV Curing, Injection Molding, Vinyl Stickers ■ Features: Glows in the dark without using electricity ■ Remarks: Can be applied to various materials and manufacturing methods as they can be obtained from pigments. *For more details, please download the PDF or feel free to contact us.

• Contract manufacturing

Mitoyo Seiko Co., Ltd. provides a variety of products that serve as the foundation for industry and daily life, including automotive-related parts, OA equipment, communication devices, and various assembled products (assembly units), as well as screw-related components. The product in this case is a fire safety certified item that can be installed as a substitute for an emergency light. It can be used for evacuation guidance in dark places during disasters, and its size is 200mm x 200mm. 【Case Overview】 ■ Product Name: Photoluminescent High-Intensity Guidance Sign ■ Size: 200mm x 200mm ■ Features: Fire safety certified item (can be installed as a substitute for emergency lights) ■ Remarks: Different designs and sizes available / can be differentiated based on the illumination of the environment and intended use *For more details, please download the PDF or feel free to contact us.

• Contract manufacturing

Mitoyo Seiko Co., Ltd. provides a variety of products that serve as the foundation of industry and daily life, including automotive-related parts, OA equipment, communication devices, and various assembled products (assembly units), as well as screw-related components. The product in this case is a compressor for gas heat pumps (GHP), which is a multi-compressor that combines two rotating bodies that perform the intake and compression processes. [Case Overview] ■ Compressor for gas heat pumps (GHP) ■ Multi-compressor (our unique mechanism) ■ Two rotating bodies are combined to perform the intake and compression processes (two rotating bodies in one compressor) ■ Depending on the operating load, it can switch between left-side operation, right-side operation, and simultaneous operation of both sides, allowing for 2-3 stage capacity control. *For more details, please download the PDF or feel free to contact us.

• Contract manufacturing

Mitoyo Seiko Co., Ltd. provides a variety of products that serve as the foundation of industry and daily life, including automotive-related parts, office automation equipment, communication devices, and various assembled products (assembly units), as well as screw-related components. We also manufacture various sensors used in die casting, cold forging, pressing, single-stroke pressing, and cutting for hydraulic sensors and airbag sensors, with the capability of integrated management from blank manufacturing to secondary processing. [Case Overview] ■ Material: ADC12, S10C, SWCH ■ Process: Die casting, cold forging, pressing, single-stroke pressing, cutting ■ Remarks: Integrated management is possible from blank manufacturing to secondary processing. *For more details, please download the PDF or feel free to contact us.

• Contract manufacturing

Mitoyo Seiko Co., Ltd. provides a variety of products that serve as the foundation for industry and daily life, including automotive-related parts, OA equipment, communication devices, and various assembled products (assembly units), as well as screw-related components. We are also capable of handling heat dissipation-related parts used in cooling fan motors. Our manufacturing methods include die casting, machining, barrel finishing, and cleaning, with materials compatible with ADC12 and A2024. 【Case Overview】 ■ Material: ADC12, A2024 ■ Manufacturing Method: Die Casting, Machining, Barrel Finishing, Cleaning ■ Remarks: Contamination management is possible *For more details, please download the PDF or feel free to contact us.

• Contract manufacturing

Mitoyo Seiko Co., Ltd. provides a variety of products that serve as the foundation for industry and daily life, including automotive-related parts, OA equipment, communication devices, and various assembled products (assembly units), as well as screw-related components. In this case, S25C is used, with a size of Φ22. The manufacturing processes include forging, cutting, plating, and polishing. The diameter tolerance range is managed at 0.01. 【Case Overview】 ■Material: S25C ■Manufacturing Process: Forging, Cutting, Plating, Polishing ■Size: Φ22 ■Remarks: Diameter tolerance range managed at 0.01 *For more details, please download the PDF or feel free to contact us.

• Contract manufacturing

Mitoyo Seiko Co., Ltd. provides a variety of products that serve as the foundation for industry and daily life, including automotive-related parts, office automation equipment, communication devices, and various assembled products (assembly units), as well as screw-related components. Our company is also capable of manufacturing busbars using progressive stamping with aluminum and copper. We can accommodate thicknesses ranging from 0.15 to 3 mm. 【Case Overview】 ■ Material: Aluminum, Copper ■ Method: Progressive Stamping ■ Size: Thickness 0.15 to 3 mm ■ Remarks: Capable of handling busbars, terminals, and connectors *For more details, please download the PDF or feel free to contact us.

• Contract manufacturing

Mitoyo Seiko Co., Ltd. provides a variety of products that serve as the foundation of industry and daily life, including automotive-related parts, OA equipment, communication devices, and various assembled products (assembly units), as well as screw-related components. We can accommodate screws, bolts, nuts, and special-shaped products through forging, rolling, and secondary processing. Sizes range from φ2 to φ40 (cut diameter). 【Case Overview】 ■ Material: Iron, Aluminum, Stainless Steel, Copper ■ Process: Forging, Rolling, Secondary Processing ■ Size: φ2 to φ40 (cut diameter) ■ Remarks: Capable of handling screws, bolts, nuts, and special-shaped products *For more details, please download the PDF or feel free to contact us.

• Contract manufacturing

Mitoyo Seiko Co., Ltd. provides a variety of products that serve as the foundation for industry and daily life, including automotive-related parts, office automation equipment, communication devices, and various assembled products (assembly units), as well as screw-related components. We are also capable of manufacturing powertrain parts used in built-in oil coolers and warmers through progressive stamping. In addition to cooling the transmission oil, it features a mechanism that quickly warms the transmission oil to the appropriate temperature during engine start-up. [Case Overview] ■ Material: A3003 ■ Method: Progressive stamping ■ Remarks: In addition to cooling the transmission oil, it features a mechanism that quickly warms the transmission oil to the appropriate temperature during engine start-up. *For more details, please download the PDF or feel free to contact us.

• Contract manufacturing

Mitoyo Seiko Co., Ltd. provides a variety of products that serve as the foundation for industry and daily life, including automotive-related parts, office automation equipment, communication devices, and various assembled units (assembly units), as well as screw-related components. In the production of sheet parts using NC forming and multi-forming methods, we accommodate materials such as SWM-B, SWB, SWP-B, SWOSC-V, stainless steel, and titanium. We can handle various shapes, materials, and wire diameters. 【Case Overview】 - Material: SWM-B, SWB, SWP-B, SWOSC-V, stainless steel, titanium - Method: NC forming, multi-forming - Size: Wire diameter φ0.1 to 13 - Remarks: Various shapes, materials, and wire diameters are available. *For more details, please download the PDF or feel free to contact us.

• Contract manufacturing

Mitoyo Seiko Co., Ltd. provides a variety of products that serve as the foundation for industry and daily life, including automotive-related parts, OA equipment, communication devices, and various assembled products (assembly units), as well as screw-related components. In the production of sheet parts using single-stroke presses, progressive presses, and transfer presses, we can work with materials such as steel, aluminum, and stainless steel. We can accommodate high-tensile materials up to 980. 【Case Overview】 ■ Material: Steel, Aluminum, Stainless Steel ■ Method: Single-stroke Press, Progressive Press, Transfer ■ Size: Plate thickness 0.5 to 10 mm ■ Remarks: Can accommodate high-tensile materials up to 980 *For more details, please download the PDF or feel free to contact us.

• Interior parts

Mitoyo Seiko Co., Ltd. provides a variety of products that serve as the foundation for industry and daily life, including automotive-related parts, office automation equipment, communication devices, and various assembled products (assembly units), as well as screw-related components. We can procure seat parts used for unlocking, reclining, and sliding, ranging from individual components to finished products. Our manufacturing methods include insert molding, welding, riveting, assembly, adhesive bonding, and fusion. [Case Overview] - Manufacturing Methods: Insert Molding, Welding, Riveting, Assembly, Adhesive Bonding, Fusion - Notes: Procurement available from individual components to finished products *For more details, please download the PDF or feel free to contact us.

• Contract manufacturing

Mitoyo Seiko Co., Ltd. provides a variety of products that serve as the foundation of industry and daily life, including automotive-related parts, OA equipment, communication devices, and various assembled products (assembly units), as well as screw-related components. We are also capable of manufacturing strikers using progressive stamping, forming, thermal clinching, heat treatment, and cationic painting. We can accommodate materials such as SAPH440 and SCM435. Tensile tests are conducted to guarantee strength. 【Case Overview】 ■ Material: SAPH440, SCM435 ■ Process: Progressive stamping, forming, thermal clinching, heat treatment, cationic painting ■ Remarks: Tensile tests can be conducted to guarantee strength *For more details, please download the PDF or feel free to contact us.

• Contract manufacturing

At Mitoyo Seiko Co., Ltd.'s Gunma factory, we have machining equipment including cutting machines, grinding machines, and assembly facilities, and we produce an average of 1,000 compressors per month through a consistent processing system from cutting to grinding and NC. We also manufacture several large cutting parts and components. Please feel free to contact us when you need our services. 【Equipment Owned (Excerpt)】 ■ Mectron Machining Center ×1 ■ Kitamura Machinery Machining Center ×1 ■ Hitachi Seiki Machining Center ×1 ■ Nippon Seiko Double-Sided Grinding Machine ×1 ■ Miyano Automatic NC Lathe ×1 *For more details, please download the PDF or feel free to contact us.

• Contract manufacturing

At Mituyo Seiko Co., Ltd.'s Gunma factory, we have machining equipment including cutting machines, grinding machines, and assembly facilities, enabling a consistent processing system from cutting to grinding and NC. We produce an average of 1,000 compressors per month. Additionally, we also manufacture several large cutting components and parts. Please feel free to contact us when you need our services. 【Equipment List (Excerpt)】 ■ Brother Machining Center × 6 ■ FANUC Machining Center × 5 ■ Taiyo Koki Oval Grinding Machine × 1 ■ Taiyo Koki End Surface Grinding Machine × 1 ■ Taiyo Koki Internal Grinding Machine × 1 *For more details, please download the PDF or feel free to contact us.

• Contract manufacturing

Our company, based on the management philosophy of "providing products and services that satisfy our customers," is committed to delivering reliable quality. Miyoto Seiko's products are utilized in a wide range of fields, including automotive, office automation, electronics, and medical applications. As the scope of applications expands, the demands for product quality and reliability are also becoming more sophisticated. To meet these customer demands, our company is actively engaged in quality improvement activities. 【Quality Assurance Activities】 - We are working to prevent quality issues by horizontally deploying the information we have cultivated through our diverse range of products. - We develop detailed quality management plans to achieve high quality while meeting delivery deadlines. - We sincerely listen to our customers' voices, continuously seek improvements without being satisfied with the current state, and strive to build trust. - Skilled technicians conduct checks on product quality using a wealth of measuring instruments. *For more details, please download the PDF or feel free to contact us.

• Contract manufacturing

Our company supplies various assembled sub-assembly units, including automotive seat frames, cameras, VTRs, and frames for office automation equipment such as copiers, to our customers. Additionally, our strength lies in the technical know-how we possess in general industrial products, including metal processing, resin molding, sewing and cutting processing, surface treatment, and heat treatment, gained through our past achievements. Please feel free to consult us if you have any concerns. 【Our Features】 ■ Price competitiveness through our unique network, including overseas bases ■ Total support for customer requests in collaboration with over 300 partner companies ■ ISO 9001 and ISO 14001 certified, contributing to quality improvement and environmental sustainability *For more details, please download the PDF or feel free to contact us.

• Interior parts
• Contract manufacturing
• Other PCs and OA equipment

We offer glow-in-the-dark products that do not require a power source, as well as customizable glow-in-the-dark and special fluorescent products tailored to specific applications. As a product example, we have guiding signs that use glow-in-the-dark materials as an alternative to emergency lights. Additionally, we can recommend suitable raw materials based on the intended use and product. We also offer sales of pigments and materials, so please feel free to consult with us. 【Features】 ■ Glow-in-the-dark products: No power source required - Absorb energy from fluorescent lights, LED lights, and sunlight to emit light ■ Special fluorescent products: Customizable according to application - Absorb external light energy such as ultraviolet and visible light and convert it into light *For more details, please download the PDF or feel free to contact us.

• Composite Materials