Parts & Materials

Sankyo Plastic Material Manufacturing Co., Ltd.

We accept orders from companies located in Japan.

  • Flexible lead times
  • Pricing upon request
  • One of a kind technology
  • Capable of mass production
  • Capable of trial production

Main ProductsComponents for semiconductor manufacturing equipment

Main Clientsmiconductor equipment manufacturers

Processing CapabilitiesPrototyping, Cutting, Plastics (Others)

Updated: March 13, 2026

匠
  • 2025

Updated: March 13, 2026

匠
  • 2025

The specialist resin processing manufacturer boasting a zero defect rate

Newly constructed company building in May 2023

We have a proven track record of working with numerous semiconductor manufacturing equipment manufacturers.

Sankyo Plastic Material Manufacturing is a specialist manufacturer of resin machining. It possesses in-house facilities capable of processing both thermoplastic and thermosetting resins. Its client base spans diverse industries including automotive, semiconductor, aerospace, and medical. The company particularly excels in machining components for semiconductor manufacturing equipment. ‘Eighty per cent of our sales are to the semiconductor manufacturing equipment industry, and we have dealings with most semiconductor manufacturing equipment manufacturers,’ states Director Shohei Teshima.

Establish a quality control system with dedicated inspectors

Sankyo Plastic Material Manufacturing's strength lies in its rigorous quality control. With approximately five dedicated inspectors permanently on staff, the company has established a quality management system where each item is inspected individually according to its own inspection procedures, using standards stricter than those required by the customer. This has enabled the company to achieve a zero defect rate. This system is applied to products for semiconductor manufacturing equipment, which demand extremely high precision, serving as a major competitive advantage over other companies. Furthermore, the establishment of a manual-based quality assurance system enables the company to respond smoothly to requests for cost reductions and shorter delivery times, contributing to the trust gained from its clients.
Semiconductor manufacturing equipment exhibits remarkable growth and is relatively unaffected by economic fluctuations. Consequently, Sankyo Plastic Material Manufacturing relocated its headquarters factory to its current site in 2023, expanding the site area and enhancing production facilities. The machining centres introduced after the headquarters relocation now total seven units, including those awaiting delivery. All units already delivered are operating at full capacity, promising future revenue growth.

Strengths

A workplace where tidying and organising are thoroughly implemented through 3S methodology.

‘Fine products can only be born from a clean environment.’ Guided by this motto, Sankyo Plastic Material Manufacturing promotes 3S methodology. We strive to enhance productivity by creating a comfortable workplace, a clean factory, and an environment conducive to concentration. This also aims to dispel the traditional image of manufacturing as dirty work. To boost employee motivation and attract new talent, we actively participate in the Open Factory events organised by Settsu City.

Transferring processing techniques from senior to junior staff.

Sankyo Plastic Material Manufacturing conducts study sessions on processing techniques for employees engaged in on-site work approximately two to three times per month, ensuring the transfer of skills from senior staff. This ensures consistent product quality regardless of who is working on the production line, thereby preventing quality variation. Furthermore, the company has established an independent Production Management Department which continuously reviews process deficiencies and seeks to improve both operational rates and productivity. According to Director Teshima, it is rare for companies of Sankyo Plastic Material Manufacturing's size to have a dedicated Quality Control Department.

Message from President

CEO
Masataka Teshima

Since our founding, we have built a solid reputation for technical expertise and reliability, primarily through plastic machining. Today, we operate a welfare facility for people with disabilities within the same premises, contributing to the local community through the dual pillars of manufacturing and human development. Our vision is to become a prosperous and vibrant enterprise, a globally competitive group of companies. Through the integration of technology and welfare, we aim to realise a society where everyone can thrive.

Major Equipment

  • Vertical Machining CentreVCS-530C
    Yamazaki Mazak4 units
  • Vertical Machining CentreVCN-535C
    Yamazaki Mazak2 units
  • Compact machining centreROBODORILL a-D21MiB5
    FANUC4 units

Company Overview

Company Name
Sankyo Plastic Material Manufacturing Co., Ltd.
Address
3-1-35 Torikai-chū, Settsu City
Company President
CEO Masataka Teshima
Founded / Established
September 1967 / February 1969
Number of Employees
35 
Phone
072-654-4847
Fax
072-654-4769
E-mail
shohei_teshima@sankyo-denzai.com
Official Website
http://sankyo-denzai.com/
Capital
10,000K JPY
Certifications
ISO 9001