Top 10 Injection Molding Companies in Japan

Looking for top injection molding companies in Japan? This article will provide you with detailed information on the best injection molding suppliers in Japan.

Before introducing the list, let us briefly introduce ourselves. We are a leading injection molding manufacturer in China. If you have any questions about our products, please feel free to contact us. We can offer you the best prices for your reference.

 

 

1. Nissei Plastic Industrial Co., Ltd.

 

Basic Information: Headquartered in Sakajo-cho, Hanishina-gun, Nagano Prefecture, Nissei is a long-established leading company in Japan’s injection molding industry, listed on the Tokyo Stock Exchange Main Board. It has approximately 1,268 employees and multiple production bases and technology centers worldwide, focusing on precision injection molding.

Main Business: Research and development and manufacturing of all-electric, hydraulic, and hybrid injection molding machines, with clamping forces ranging from 5 to 4,000 tons, covering ultra-precision electronic components, medical micro-components, automotive electronics, and high-end consumer electronics. It provides mold design, automated system integration, IoT intelligent monitoring, and global after-sales technical support. Its self-developed all-electric injection molding machines are renowned for their high precision and low energy consumption, with a repeatability of 0.01mm. Its medical equipment complies with ISO 13485 standards. Customers include Sony, Canon, and Johnson & Johnson.

1.Founded 1947

Website: https://www.nisseiplastic.com/

 

2. Shibaura Machine Co., Ltd.

 

Basic Information: Headquartered in Minato-ku, Tokyo, formerly Toshiba Machine, this comprehensive precision machinery manufacturer in Japan employs approximately 3,000 people and has over 10 branches worldwide. It is a global leader in injection molding equipment and mold technology.

Main Business: Produces all-electric and hydraulic injection molding machines with clamping forces ranging from 30 to 3,000 tons, suitable for large automotive structural parts, electronic housings, medical containers, and industrial precision components. Provides mold design and manufacturing, automation integration, process optimization, and customized molding solutions. Its equipment is renowned for its high rigidity and stability. It serves Toyota and Honda in the automotive industry, meets GMP standards in the medical industry, and also has interests in semiconductor manufacturing equipment and industrial robots.

Further details: Established: 1939
Official Website: https://www.shibaura-machine.co.jp/

 

3. Sumitomo (SHI) Demag Plastics Machinery Co., Ltd.

 

Basic Information: Headquartered in Chiyoda-ku, Tokyo, a subsidiary of the Sumitomo Heavy Industries Group, a global benchmark for high-end injection molding technology, with approximately 2,000 employees, focusing on the R&D and production of all-electric injection molding machines.

Main Business: R&D and manufacturing of all-electric and hybrid injection molding machines, with clamping forces ranging from 50 to 1500 tons, specializing in ultra-precision, high-speed molding, suitable for optical lenses, medical micro-components, automotive electronics, and high-end consumer electronics. Provides mold matching, automation systems, process optimization, and global technical support. All-electric models reduce energy consumption by 60% compared to hydraulic presses, achieving a repeatability accuracy of 0.01mm. Over 100,000 units are installed worldwide, with customers including Tesla, Bosch, and Zeiss.

Established: 1999 (Joint Venture)
Website: www.sumitomo-demag.com

 

4. Japan Steel Works, Ltd. (JSW, Japan Steel Works Co., Ltd.)

 

Basic Information: Headquartered in Chiyoda-ku, Tokyo, a long-established Japanese heavy industry company, listed on the Tokyo Stock Exchange, with approximately 8,000 employees. Injection molding equipment and mold business are among its core segments, holding a leading global market share.

Main Business: R&D and manufacturing of a full range of injection molding machines, including hydraulic, all-electric, and large two-platen injection molding machines, with clamping forces ranging from 50 to 5000 tons, covering the automotive, packaging, electronics, medical, and construction industries. Provides mold design and manufacturing, automation integration, recycling technology, and full lifecycle services. Its self-developed “JSW” series of all-electric injection molding machines are renowned for their high precision and stability. In the automotive sector, it focuses on lightweight plastic parts; in the packaging industry, it serves Unilever, Coca-Cola, and others; it also has interests in the steel and energy equipment sectors.

Founded: 1907
Official Website: www.jsw.co.jp

 

5. Toyo Machinery & Metal Co., Ltd.

 

Basic Information: Headquartered in Akashi City, Hyogo Prefecture, a professional Japanese injection molding equipment manufacturer, listed on the Tokyo Stock Exchange, with approximately 771 employees, focusing on mid-to-high-end injection molding equipment and mold solutions.

Main Business: Production of all-electric and hydraulic injection molding machines, with clamping forces ranging from 30 to 2000 tons, suitable for automotive interior parts, appliance housings, industrial components, and general packaging products. Provides mold design, automation integration, after-sales technical support, and customized machine modification. The equipment is known for its high stability and cost-effectiveness. Its self-developed high-speed injection molding machines reduce cycle time by 20%. Serving Nissan and Mitsubishi in the automotive industry, and Panasonic and Sharp in the electronics industry.

Founded: 1925
Official Website: www.toyo-kikin.co.jp

 

6. Fanuc Corporation (ファナック株式会社)

 

Basic Information: Headquartered in Oshino Village, Yamanashi Prefecture, a global giant in industrial robots and automation, listed on the Tokyo Stock Exchange, with approximately 10,000 employees. A global leader in the integration of injection molding equipment and automation systems.

Main Business: R&D and manufacturing of all-electric injection molding machines with clamping forces of 50–1500 tons, focusing on high-speed, high-precision molding, suitable for electronic connectors, mobile phone casings, automotive precision parts, and medical products. Provides integrated injection molding-robotics-automation solutions, with self-developed servo drive and control systems, achieving 30% lower energy consumption than the industry average, supporting Industry 4.0 smart factory integration. Customers include Apple, Huawei, and Toyota.

Founded: 1972
Official Website: www.fanuc.co.jp

7. Matex Co., Ltd.

 

Basic Information: Headquartered in Osaka, Osaka Prefecture, Matex is a long-established Japanese manufacturer of precision injection molds. With approximately 200 employees and over a century of industry experience, Matex focuses on high-end precision molds and molding processes.

Main Business: Design and manufacture of high-precision injection molds, including multi-cavity molds, two-color molds, and insert molds, suitable for precision components in the medical, aerospace, electronics, and automotive industries. Matex provides small-batch, multi-variety precision injection molding services, covering engineering plastics, specialty plastics, and biodegradable materials, along with post-processing services such as screen printing, painting, and ultrasonic welding. Mold precision reaches 0.005mm. Medical products comply with ISO 13485, and aerospace components comply with JIS standards. Clients include Airbus, Siemens Healthineers, and Continental.

Established: 1921
Website: www.matex.co.jp

 

8. Yasui Co., Ltd.

 

Basic Information: Headquartered in Nagoya, Aichi Prefecture, Japan, a precision injection mold and molding processing company with approximately 300 employees, specializing in high-end precision mold manufacturing for the automotive and electronics industries.

Main Business: Designing and manufacturing high-precision injection molds for automotive interior parts, electronic housings, precision gears, etc. Molds are processed using high-precision equipment with an accuracy of 0.01mm. Providing large-scale precision injection molding production, along with one-stop services including assembly, testing, and packaging. Materials include engineering plastics and specialty plastics. Serving Toyota and Honda in the automotive industry, and Sony and Panasonic in the electronics industry.
Established: 1945
Website: www.yasui-mold.co.jp

 

9. Fujigousei Inc.

 

Basic Information: Headquartered in Fuji, Shizuoka Prefecture, Japan, a comprehensive injection molding company with approximately 500 employees and over 30 years of industry experience, specializing in the automotive, home appliance, and packaging industries.

Main Business: Provides customized injection molding services, with clamping forces ranging from 50 to 1500 tons, producing plastic products such as automotive parts, appliance casings, food packaging, and daily consumer goods. It has its own mold-making workshop, capable of designing and manufacturing molds according to customer needs, and provides post-processing services such as screen printing, pad printing, spraying, and ultrasonic welding. Products boast high precision and stability, and its clients include both local and international companies.

Established: 1987
Website: www.fujigousei.co.jp

 

10. Tanaka Die & Mold Works Co., Ltd.

 

Basic Information: Headquartered in Kawasaki City, Kanagawa Prefecture, a long-established Japanese precision injection mold manufacturer with approximately 250 employees, specializing in high-end precision molds and molding processing, possessing strong technical capabilities.

Main Business: Design and manufacture of high-precision injection molds such as multi-cavity molds, two-color molds, and insert molds, suitable for medical, electronic, automotive, and optical components; providing small-batch, multi-variety precision injection molding, along with one-stop services including testing, assembly, and packaging. Mold life exceeds 1 million cycles, product precision reaches 0.01mm, and medical products comply with ISO 13485. Clients include Olympus, Nikon, and Denso.

Established: 1955

Website: www.tanaka-mold.co.jp

 

11. Ube Machinery Corporation, Ltd.

 

Basic Information: Headquartered in Ube City, Yamaguchi Prefecture, a subsidiary of the Ube Industries Group, a professional injection molding equipment manufacturer with approximately 1,000 employees, focusing on medium and large-sized injection molding equipment and mold solutions.

Main Business: Production of hydraulic and all-electric injection molding machines with clamping forces of 100–4000 tons, suitable for large automotive structural parts, appliance housings, industrial components, and packaging products. Offering mold design, automation integration, after-sales technical support, and customized machine modification, our equipment is renowned for its high rigidity and stability. We serve Toyota, Honda, and Nissan in the automotive industry, and Kao and Lion in the packaging industry.

Established: 1942
Website: www.ube-machinery.co.jp

 

12. Nissei ASB Machine Co., Ltd.

 

Basic Information: Headquartered in Sakajo-cho, Hanishina-gun, Nagano Prefecture, a subsidiary of Nissei Resin Industries, Ltd., a global leader in injection stretch blow molding equipment with approximately 500 employees, specializing in injection molding equipment for the packaging industry.

Main Business: R&D and manufacturing of integrated injection stretch blow molding machines, injection molding machines, and molds; production of PET bottles, plastic containers, bottle caps, and other packaging components; providing integrated injection molding-blow molding-labeling production line solutions. Suitable for the beverage, food, daily chemical, and pharmaceutical packaging industries, the equipment emphasizes high speed, high efficiency, and low energy consumption. The molds feature a multi-cavity design, with up to 96 cavities per mold. It holds a leading global market share in packaging equipment, with clients including Coca-Cola, Pepsi, Nestlé, and Danone.

Founded: 1978
Website: www.nissei-asb.co.jp

 

Conclusion

 

These 12 companies represent the pinnacle of Japan’s injection molding industry, combining decades of engineering heritage with relentless innovation. From global equipment giants to precision mold specialists, each excels in its niche—whether high-volume automotive components, ultra-precise medical parts, or efficient packaging solutions. Their commitment to quality, automation, and sustainability solidifies Japan’s status as a global leader in injection molding technology. As demand for high-quality plastic products evolves, these firms remain at the forefront, driving progress and setting industry standards worldwide.