日本製造 List of Products and Services

Spot welding is a strong joint at each point, but there were weaknesses in the welding process aside from material deformation due to heat. The improvement made by automating this is called "Spot Welding Posture Control." Welding is performed using a spot welding machine with pre-programmed point positions. The setting of the point positions is done by technicians who consider the material's elongation and "distortion" based on their experience and track record, but after that, it's just a matter of setting the product in the machine. If the product is not properly set, the sensors mounted on the spot welding machine will activate, automatically stopping the movement to prevent issues from occurring in advance. [Features] ■ Further reduction of human error ■ Welding is performed using a spot welding machine with pre-programmed point positions ■ Product quality stabilizes and waste is reduced *For more details, please refer to the PDF document or feel free to contact us.

The "Simultaneous Processing of 4 Parts" is a special processing technology born from the desire to reduce the running costs associated with the regular production of large quantities of parts for our customers. In conventional progressive presses, production is limited to one type and one piece per shot. However, by leveraging press technology and mold expertise, we have realized a method to process four different types simultaneously in one shot. This allows for a reduction in mold production costs and the time required for changing molds. 【Features】 ■ Technology to produce 4 parts in one shot ■ Packed with skills cultivated over 65 years of Seiko Industry's history ■ Reduction in mold production costs and the time required for changing molds *For more details, please refer to the PDF materials or feel free to contact us.

Our company is equipped to handle production volumes from prototypes and small lots to mass production, according to our customers' needs. With a variety of equipment, we manufacture molds and inspection jigs in-house. This environment enables us to achieve cost-effective and rapid "monozukuri" (manufacturing). From press processing using molds to mold-less processing with sheet metal-related equipment, we can combine processes while maintaining an optimal balance of cost and quality, allowing us to accept both mass production in the tens of thousands and the production of a single prototype. 【Production Details】 ■ Press mass production processing and mold manufacturing for precision equipment parts ■ Prototyping and non-mass production using turret punches, laser processing machines, and press brakes ■ Sheet metal parts processing and welding assembly ■ Cutting processing using machining centers *For more details, please refer to the PDF document or feel free to contact us.

For customers struggling with riveting, we have independently developed the "Simultaneous TOX(R) Riveting." This technology is strong for riveting dissimilar materials and features high functionality, such as the ability to confirm riveting strength through numerical management. It integrates the "TOX(R)" bonding technology into molds, enabling time savings and cost reductions. With the TOX(R) system, various types and thicknesses of metals can be joined, regardless of the presence of intermediate materials. Additionally, there are almost no notched areas, resulting in extremely high shear and peel strength, as well as increased fatigue strength against dynamic loads. 【Features】 ■ Strong for riveting dissimilar materials ■ Riveting strength can be confirmed through numerical management ■ Enables time savings and cost reductions ■ The basic "TOX(R)" system can perform multiple operations simultaneously *For more details, please refer to the PDF materials or feel free to contact us.

Our company is built on the spirit of "customer first," which stems from our commitment to quality assurance and our extensive manufacturing system, all driven by the desire to satisfy our customers. We can flexibly combine equipment according to the desired production volume, allowing us to accommodate a wide range of needs, from single press jobs and one-off laser processed products to regular mass production of tens of thousands of units. Additionally, even if there are no inspection requests from customers, we conduct inspections using our custom-made inspection jigs for quality assurance. 【Features】 ■ Diverse metal processing technologies ■ Wide range of support from one-off laser processed products to regular mass production of tens of thousands of units ■ Delivery of products with assured quality ■ Creation of inspection jigs ■ Engineers present during meetings ■ Reliable shipment management *For more details, please refer to the PDF document or feel free to contact us.

Our company is committed to continuously finding ways to provide products of satisfactory quality to our customers at reasonable prices. Engineers who are well-versed in the properties of materials and manufacturing processes participate from the early stages of discussions. By assessing the feasibility of product manufacturing from the drawings, we can incorporate measures into the manufacturing process to propose more efficient and cost-effective solutions. In addition to basic techniques such as arc welding, spot welding, bar riveting, and clinching, we also focus on cost reduction and efficiency improvements through our uniquely developed technologies. **Features** - High-temperature press processing technology - Not only basic joining and welding techniques but also proprietary developed technologies - Equipped to perform a wide range of press processing from single-type to large progressive dies - Capable of in-house production of molds and inspection jigs - Composed of colleagues who aspire to "manufacturing" regardless of age, nationality, gender, experience, or educational background *For more details, please refer to the PDF materials or feel free to contact us.*

What we value most is "customer satisfaction." To achieve this, we place great importance on "quality." Under the policy that "if we have the correct equipment, the correct standards and work instructions, and if we perform the correct work according to them, the correct products will naturally be produced," we implement quality control. In response to customer demands, we believe that sincerely and steadily continuing the basics of quality management, such as "is there any problem with the product itself?" and "are the delivery dates and quantities being adhered to?" is characteristic of our company. 【Features】 ■ About 15% of our employees are inspectors responsible for quality assurance. ■ We manufacture inspection jigs tailored to our products in-house, enhancing the efficiency and accuracy of quality inspections. ■ To eliminate defects in the manufacturing process, we incorporate a system that maintains stable quality from the design stage. *For more details, please refer to the PDF document or feel free to contact us.

Our company is equipped with technology, facilities, and the experience and wisdom of our engineers, allowing us to handle various metal processing, including metal pressing, sheet metal processing, and welding. There is room for innovation in all aspects, such as material properties, processing methods, mold structures, and processing procedures. Our engineers, who are well-versed in metal pressing, will draw out points that you may not have noticed and propose an optimal production plan to realize your requests. 【Features】 ■ In-house production of inspection jigs ■ Production of prototypes and partial samples to grasp challenges realistically ■ Engineers participate from the initial meetings to listen and propose production plans *For more details, please download the PDF or contact us.

At Hirokawa Industrial Co., Ltd., which is part of our business group, we propose cost reduction to fundamentally change the conventional thinking about molds by leveraging our reliable technology based on many years of experience. Our newly developed new concept molds significantly reduce your mold investment costs. Because the investment amount for molds is lower, the cost of mold splitting for parts decreases. By shortening the mold production time, we can deliver in a shorter lead time. We encourage you to consider this. 【Features】 ■ Up to 50% reduction in mold costs (compared to our company) ■ Possible delivery in shorter lead times compared to conventional molds (compared to our company) *For more details, please refer to the related links or feel free to contact us.

At our business group, Kaneko Manufacturing Co., Ltd., we engage in "aesthetic product manufacturing." Examples of our products include air purifiers, small computer cases, and computer cases made from materials such as iron, stainless steel, and aluminum. We also offer color variation options, allowing you to choose from a wide range of colors. Please feel free to contact us when you need assistance. 【Features】 ■ Color variation options available ■ Choose from a wide range of colors *For more details, please refer to the related links or feel free to contact us.

At our business group, Kaneko Manufacturing Co., Ltd., we specialize in "custom manufacturing." Examples include punching dot art created using only three types of holes and saucers made from a combination of two types of sheet metal. Additionally, we manufacture items such as pen holders and ashtrays, with a wide variety of color options available to choose from. 【Overview of Examples (Partial)】 < Punching Dot Art > ■ Material - Punching part: Aluminum - Base part: Stainless steel ■ Created using only three types of holes *For more details, please refer to the related links or feel free to contact us.

At our business group, Kaneko Manufacturing Co., Ltd., we handle "building-related components." We offer stair treads made of iron and stair handrails that use a strong adhesive at the joints. Additionally, we have production examples such as wall-mounted mailboxes. Please feel free to contact us when you need our services. 【Example Overview】 ■ Stair Treads - Material: Iron ■ Stair Handrails - Material: Iron, Joint: Strong Adhesive ■ Wall-mounted Mailboxes - Material: Stainless Steel, Iron *For more details, please refer to the related links or feel free to contact us.

At our business group, Kaneko Manufacturing Co., Ltd., we handle "electrical equipment-related products and parts." We have manufacturing examples including internal components for air purifiers, computer cases, and 3D printers. We can also accommodate color variations, so please feel free to contact us when you need assistance. 【Case Overview】 ■ Internal components for air purifiers ・Material: Steel, cationic coating ■ Computer cases ・Material: Steel, cationic coating ■ 3D printers ・Sheet metal manufacturing, assembly, testing, packaging *For more details, please refer to the related links or feel free to contact us.

At our business group, Kaneko Manufacturing Co., Ltd., we handle "machine-related parts." We have manufacturing examples including agricultural machinery parts made from iron, large Sirocco fans, and parts for store refrigerators. Additionally, you can choose from a wide variety of colors. Please feel free to contact us when you need assistance. 【Overview of Examples (Partial)】 ■ Agricultural Machinery Parts ・Material: Iron ・Spot Welding ■ Large Sirocco Fans ・Material: Iron ・Press Fitting *For more details, please refer to the related links or feel free to contact us.

At Dowa Aluminum Co., Ltd., which is part of our business group, we manufacture "aluminum frames for silk printing." We have a proven track record of delivering various printed aluminum frames across different fields. Additionally, we accept orders starting from just one unit. If you have urgent delivery needs, please feel free to consult with us. 【Features】 ■ Proven track record of delivering various printed aluminum frames across different fields ■ Orders can be accepted starting from just one unit *For more details, please refer to the related links or feel free to contact us.

At our business group, Dowa Lightweight Metals Co., Ltd., we manufacture "aluminum frames" for metal masks. We have a wealth of delivery experience for high-precision metal masks and other semiconductor manufacturing lines, and we can accommodate manufacturing and processing for various lines. Please feel free to contact us when you need assistance. 【Features】 ■ Extensive delivery experience for semiconductor manufacturing lines ■ Capable of manufacturing and processing for various lines *For more details, please refer to the related links or feel free to contact us.

At our business group, Dowa Aluminum Co., Ltd., we manufacture "aluminum frames for printing." The company has developed alongside the silk industry as a top-class manufacturer of printed aluminum frames, which are essential for printing. We also accommodate various customer requests regarding material types, finishing methods, and precision. Please feel free to contact us when you need our services. [Features] - We respond to customer requests regarding material types, finishing methods, and precision. - In addition to our regular stock frames, we maintain a variety of material stock with different cross-sections. *For more details, please refer to the related links or feel free to contact us.

At Dowa Aluminum Corporation, which is part of our business group, we handle aluminum materials such as round pipes, square pipes, bars, angles, and channels. In addition to our regular stock items, we leverage the network we have built with manufacturers and trading companies since our establishment to provide the materials our customers need. We also accommodate deliveries after anodizing treatment and processing. 【Features】 ■ Handling aluminum materials such as round pipes, square pipes, bars, angles, and channels ■ Providing materials that our customers require ■ Accommodating deliveries after anodizing treatment and processing *For more details, please refer to the related links or feel free to contact us.

At our business group, Nakajo Koki Co., Ltd., we perform high-precision processing of small canning parts. We would like to introduce our in-house technology, "Canning Column Processed Products." The precision after canning and machining is finished within tolerances of 0.02mm for parallelism, perpendicularity, flatness, etc., and we maintain the accuracy of the parts through well-understood setups and processing methods. 【Features】 ■ The precision after canning and machining is finished within tolerances of 0.02mm for parallelism, perpendicularity, flatness, etc. ■ We maintain the accuracy of the parts through well-understood setups and processing methods. *For more details, please refer to the related links or feel free to contact us.

At our business group, Nakajo Koki Co., Ltd., we are capable of manufacturing parts in various materials such as SS, SUS304, and AL. We would like to introduce our in-house technology: "A5052 material can processing products." Based on years of welding technology, we are able to weld not only iron but also SUS, AL, and other metals, and we manufacture high-precision parts using appropriate processing methods based on the material. 【Features】 ■ Capable of manufacturing parts in various materials such as SS, SUS304, and AL ■ High-precision parts manufactured using appropriate processing methods based on the material *For more details, please refer to the related links or feel free to contact us.

We would like to introduce the equipment owned by our business group, Nakajo Koki Co., Ltd. We use Smooth CAM and Matrix CAM, and by supplying programs for MC processing from external sources, we are achieving time reduction and small lot single-item processing. Additionally, we maintain high precision through processing with a bed-type horizontal milling machine, and we accommodate single-item processing with a CNC milling machine, which supports high precision processing with a bed-type structure and #50 spindle. 【Equipment Owned (Partial)】 ■ Gantry Machining Center ■ MC Program Software ■ MC Program Editor ■ Bed-Type NC Milling Machine ■ NC Lathe *For more details, please refer to the related links or feel free to contact us.

At Kajiume Industrial Co., Ltd., which is part of our business group, we specialize in "cold forging and precision machining." We focus on integrated production until completion. We are particularly skilled in mass production of shaft-type components and have established a system that ensures a stable supply of products at all times. Additionally, depending on the lot size and precision requirements, we can propose low-cost and short-delivery machining methods, which is one of our strengths. 【Features】 ■ Specializing in integrated production until completion ■ Skilled in mass production of shaft-type components ■ Established a system for stable product supply at all times ■ Capable of proposing low-cost and short-delivery machining methods *For more details, please refer to the related links or feel free to contact us.

We would like to introduce the equipment for cold forging and precision machining held by our business group, Kajiume Industrial Co., Ltd. We have a variety of machines including bottle formers, split-type molding machines, rolling machines, automatic milling machines, milling machines, and NC lathes. In addition, we also possess inspection equipment such as hardness testers, electromagnetic flaw detectors, and contour tracers. 【Equipment Held (Partial List)】 ■ Parts former ■ Bolt former ■ Multi-stage header ■ Split-type molding machine ■ Knuckle press *For more details, please refer to the related links or feel free to contact us.

At our business group, Kajiume Industrial Co., Ltd., we manufacture "cold forged parts." One of our specialties is "various shaft components," for which we offer a comprehensive service from prototype development to mass production based on customer requests. We also manufacture the corresponding "bushings." Additionally, we provide parts for "automotive steering lock," "switch cases," and "waterproof sensor components." 【Product Lineup (Partial)】 ■ Various shaft components ■ Shafts ■ Bushings ■ Parts for automotive steering locks ■ Switch cases *For more details, please refer to the related links or feel free to contact us.

We would like to introduce our business group, "Miyazaki Iron Works Co., Ltd." We primarily engage in cutting processing for automotive parts, consistently implementing the manufacturing of pinions that require high-level through-hole processing technology. We mainly perform cutting processing for automotive parts, machining iron materials such as bars (round bars) to achieve precise dimensions. [Features] ■ Primarily engaged in cutting processing for automotive parts ■ Capable of machining iron materials such as bars (round bars) to achieve precise dimensions ■ Strengths include high quality and strict adherence to delivery times even in mass production *For more details, please refer to the PDF document or feel free to contact us.

Our business group, "Kokisha Co., Ltd.," is a company engaged in vacuum deposition processing. We evaporate metals such as aluminum and Hastelloy in a vacuum and deposit them onto the surfaces of plastic molded products, metal pressings, castings, films, etc., to impart functions such as reflectivity, resistance value, and appearance to the products. Additionally, for partial deposition, we utilize our past know-how, consult during the design phase, apply masks during prototyping, and create products that satisfy our clients from the initial stages. [Features] - We can propose functionalities and appearances requested for the product during the design phase. - We can accommodate the desired color tone through topcoat painting after deposition. - It is also possible to give gloss and metallic feel to engineering plastics such as nylon and PPS. - We propose packaging methods that maintain the quality of the processed products upon delivery. *For more details, please refer to the PDF materials or feel free to contact us.

Miyazaki Iron Works Co., Ltd. has achieved zero delivery delays as of April 10, 2025, with a continuous order volume of approximately 1.5 million units per month. In terms of quality, we have received awards such as excellence awards from our clients' quality departments, and we have been appointed as the quality committee chairperson in our cooperative association. We do not simply manufacture products; we thoroughly focus on cost and quality by utilizing dedicated machines, automatic lathes, and inspection equipment. 【Business Activities】 ■ Manufacturing and processing of iron products ■ Lathe work, cutting, drilling, welding ■ Industrial design and digital design, etc. *For more details, please download the PDF or feel free to contact us.

Miyazaki Iron Works Co., Ltd. conducts activities to encourage all employees, regardless of nationality, age, gender, or job type, to have a desire for improvement and a spirit of advancement. By swiftly addressing issues, the atmosphere within the company is truly wonderful. I am convinced that this education is the foundation for achieving 100% quality assurance for our customers. 【Business Activities】 ■ Manufacturing and processing of iron products ■ Lathe work, cutting, drilling, welding ■ Industrial design, digital design, etc. *For more details, please download the PDF or feel free to contact us.

Miyazaki Iron Works Co., Ltd. holds product quality meetings and design meetings to improve product quality. As engineers who agree on processes, clarify audit standards, and always strive for the highest quality, we provide training on how products are actually used, instilling a mindset focused on productivity and reducing lead times. Additionally, we are committed to thorough Japanese language education and foreign language education. 【Business Activities】 ■ Manufacturing and processing of iron products ■ Lathe work, cutting, drilling, welding ■ Industrial design, digital design, etc. *For more details, please download the PDF or feel free to contact us.

Sanwa Giken Co., Ltd. is an expert in mold manufacturing and metal processing. We provide very detailed support and can serve as a consultation point. Even if we cannot handle something in-house, we utilize our extensive network within the industry to introduce appropriate other companies or propose better solutions to meet our customers' needs. 【Business Activities】 ■ Mold manufacturing, metal processing *For more details, please download the PDF or feel free to contact us.

Sanwa Giken Co., Ltd. is capable of responding to urgent product modifications and revisions, even in small lots. We are relied upon when situations arise that large companies cannot adequately handle. Our customers refer to us as "Sanwa, the one to turn to in times of trouble." Please feel free to contact us when you need our services. 【Business Activities】 ■ Mold manufacturing, metal processing *For more details, please download the PDF or feel free to contact us.

Sanwa Giken Co., Ltd. trains technicians who can achieve a level of smoothness on finished surfaces that cannot be judged even by measuring instruments, using their skilled techniques. We are committed day and night to ensuring that no small defects are overlooked, prioritizing the prevention of accidents such as chipping and cracking to the greatest extent possible. Please feel free to contact us when you need our services. 【Business Activities】 ■ Mold manufacturing, metal processing * For more details, please download the PDF or feel free to contact us.

We would like to introduce the "Long-Term Warranty System" of Sanwa Giken Co., Ltd. In the event that defects such as chipping, cracking, or uneven wear occur while the customer is using the product under normal conditions, we will provide the following warranty and repair or replace the mold free of charge. However, the warranty is limited to cases where defects occur during normal use by the customer, and it does not apply if the product has been used beyond the specified limits. 【Features】 ■ One-year full warranty on all products ■ Three-year warranty (optional) available for a fee *For more details, please download the PDF or feel free to contact us.

Miyazaki Iron Works Co., Ltd. has been handling hard materials for many years, and through our experience, knowledge, and technical skills, we are passing down our expertise to our employees and pursuing new ideas. After processing hard materials with lathes, we conduct a final inspection with a triple-check system to prevent quality defects, incorrect deliveries, and delays in delivery. We implement processes and quality control that enable us to achieve high quality and short delivery times even for small lots, and we also realize cost reductions through collaboration with companies in other industries. 【Business Activities】 ■ Manufacturing and processing of iron products ■ Turning, cutting, drilling, welding ■ Industrial design and digital design, etc. *For more details, please download the PDF or feel free to contact us.

Sanwa Giken Co., Ltd. can deliver high-quality products in small lots within a short lead time. Although there is no fair and objective data available in the industry, according to feedback from many customers, it seems that we can deliver over 20% faster than the industry average. Please feel free to contact us when you need our services. 【Business Activities】 ■ Mold manufacturing, metal processing *For more details, please download the PDF or feel free to contact us.

Sanwa Giken Co., Ltd. regularly conducts maintenance and audit services to prevent accidents in advance. Every six months, specialized inspectors have begun auditing the usage processes and the condition of products. This is because the company is particular about quality, especially durability. The occurrence of defects poses a risk of temporarily halting customer operations. The company is always discussing how to reduce that idle time. [Business Activities] ■ Mold manufacturing, metal processing *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case study of our company's "spline molding punch" mold formation. Since the processing rate is reduced with pilot holes, the risk of seizing is minimized. By meticulously controlling the approach shape and wrapping, the precision is very high, and it also excels in durability. [Challenges] ■ Low risk of seizing ■ Desire to keep prices reasonable ■ No variation in shape for each product *For more details, please feel free to contact us.

We would like to introduce our company's case study on "carbide forward extrusion dies." As a very popular die, we have supplied over 20,000 products to date. Based on years of accumulated experience and knowledge, we have selected suitable carbide materials for use, and this is our standard die that continues to pursue product lifespan and precision. [Challenges] - No durability issues even with heavy materials or stainless steel, while maintaining precision - Since it is used in relatively large quantities, we want to keep the price per unit reasonable *For more details, please feel free to contact us.

We would like to introduce a case study of mold forming for our "carbide hole punch." The material flowing into the central hole poses a significant risk of vertical cracking in the punch, and without reinforcement against internal pressure, it tends to become unstable. However, by selecting suitable carbide materials, we can enhance its durability. Additionally, while lowering hardness increases toughness, it also raises the risk of buckling. Our experienced technicians maintain this delicate balance effectively. Cold forging involves many components such as presses, molds, and lubrication, leading to various potential issues. However, we minimize these problems through high-precision technical skills and meticulous quality control processes. [Challenges] - We want to maintain an optimal balance of precision and durability. - We aim to keep costs reasonable. *For more details, please feel free to contact us.*

We would like to introduce a case study of our "hard spline molding dies." With dies that shape spline shafts, we pay close attention to the tapering of the tooth tip diameter and the burning of the tooth root. Through careful selection of suitable materials and thorough management of the work process, we create molding dies with excellent precision. Please feel free to contact us when you need assistance. [Challenges] ■ The spline shaft remains stable even after long use. ■ We want to keep prices reasonable. ■ There is no variation between products. *For more details, please feel free to contact us.

We received a request to create fittings tailored to the hose size, and we would like to introduce a case where we responded to this request. There were challenges such as wanting to maintain high durability, but we produced it at a low cost and with a short delivery time. It boasts excellent durability, with a breakage rate of less than 0.1% over three years. If you abandon the concept of a dedicated item, various alternatives are possible. Since it is an R material with high dimensional freedom, we can provide it in dimensions that match the installation location and R dimensions. [Challenges] ■ Want to maintain high durability ■ Want to keep prices reasonable ■ Want to purchase in small lots *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case where we processed and manufactured a product requested by a client without any secondary subcontracting, and carried out the inspection and shipping process. In this case, there were challenges such as wanting to keep the price reasonable and purchasing in small lots. Our company is currently offering products at prices below the market rate. Additionally, if you consult with us, we can process even small lots. 【Challenges】 ■ Minimize delivery time as much as possible ■ Keep the price reasonable ■ Purchase in small lots ■ Minimize defects through thorough quality control *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case where we processed and manufactured a product requested by a client without any secondary subcontracting, and carried out the inspection and shipping process. In this case, there were challenges such as wanting to shorten the delivery time as much as possible and wanting to keep the price reasonable. Our company has maintained zero delays in delivery for many years. Additionally, we provide our services at prices below the market rate. [Challenges] ■ Wanting to shorten the delivery time as much as possible ■ Wanting to keep the price reasonable ■ Wanting to purchase in small lots ■ Wanting to minimize defects through thorough quality control *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case where we manufactured "stair handrails." We faced challenges such as wanting to maintain an appropriate balance of precision and durability, but by specifying the steel materials and the welding points, we were able to produce them at a reasonable cost and within a short delivery time. Our director, who graduated from a technical high school in architecture and a university in industrial design, is drawn to the beauty of industrial design and is exploring the possibilities of steel materials. Let's work together to realize a uniquely designed product. [Challenges] ■ Wanting to maintain an appropriate balance of precision and durability ■ Wanting to keep the price reasonable *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case where we processed and manufactured a product requested by a client without any secondary subcontracting, and carried out the inspection and shipping process. In this case, there were challenges such as wanting to minimize defects through thorough quality control. Therefore, we established a quality management system and implemented a triple-check process to keep defects as close to zero as possible. [Challenges] ■ Delivery time ■ Keeping prices reasonable ■ Purchasing in small lots ■ Minimizing defects through thorough quality control *For more details, please download the PDF or feel free to contact us.