Parts Seiko Co., Ltd

Parts Seiko Co., Ltd



Don't hesitate to contact us about designing and assembling as well!

We offer parts with an integrated production involving cutting parts, surface treatment, assembly, and molding such as lost-wax and die casting in cooperation with our business partners and group companies.

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Integrated production


6 domestic and overseas bases

We offer products with the same high quality standard with our in-house developed production control system from our group companies quickly. Here are our bases below.
- 4 domestic bases in Misato city (Saitama), Koshigaya city (Saitama), Nishishirakawa gun (Fukushima), and Satsumasendai city (Kagoshima)
- 2 overseas bases in Shenzhen city (China) and Manila city (Philippines)

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global bases


We meet customers' requests with more than 800 machine tools!

We own more than 800 machine tools and inspection equipments at our bases in Japan, China, and Philippines, so that we have prepared a business continuity plan.

We offer high quality products at competitive prices.

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more than 800 machine tools and inspection equipments


Surface treatment by our in-house plating factory

Our skilled engineers offer the most suitable surface treatment such as electroplating, electroless plating, black dyeing, and alumite with competitive price in a short delivery time.
We offer delivery services for products with electroless plating and black dyeing as well.

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Surface treatment


ISO9001 & ISO14001 certified

We acquired ISO9001: 2015 in March 2018 and ISO14001: 2015 in February 2018. We constantly strive to assure higher quality for our customers and to contribute to society through environmental activities.

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quality assurance


We manufacture products in earnest with 1050 employees
(consolidated) for more than 35 years.

Since our founding as a screw trading company, we have manufactured products in various ways such as cutting, surface treatment, assembling, and specially molding. We often receive testimonials from our customers that they are able to trust our products and services. We ship products about 730 times per day (about 250,000 times per year) and make transactions with more than 200 customers.

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  • 35 years of experience
  • 35 years of experience
  • 35 years of experience
  • 35 years of experience
  • 35 years of experience

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