Meiho Co., Ltd.

Meiho Co., Ltd. (株式会社メイホー) is a Japanese plastics injection molding manufacturer headquartered in Nogata, Fukuoka Prefecture. Founded on January 18, 1973, the company describes itself as a research-and-development-oriented mass-production manufacturer that integrates development, design, mold making, resin molding, prototyping, and mass production. Its core capabilities span precision molds for semiconductors, blow molding, injection molding, and liquid silicone rubber (LSR/LIM) molding, as well as precision machinery parts. The company operates from several facilities in Nogata: its headquarters and second factory (mold manufacturing division) at 811-1 Kanda, and its third factory (molding division and R&D center) at 287 Tonno. It also maintains a Tokyo office in Tsurumi-ku, Yokohama, focused on market development and sales. As of its company profile, Meiho employs 178 people and has capital of 100 million yen. Its representative director and president is Katsuhiko Nagamatsu, who assumed the role as the third-generation president in January 2014. Meiho's product portfolio includes plastic injection molded parts, LED components, liquid silicone rubber molded parts, composite molded products, and electronic component assembly. The company has expanded into medical device manufacturing, obtaining ISO 13485:2016 certification for its third factory in February 2024, and registering as a medical device manufacturer in Fukuoka Prefecture in May 2020. It also began exporting small injection molding machines to the Taiwan market in July 2020. Meiho has received recognition for its workplace health initiatives, earning the "Health and Productivity Management Outstanding Organization" (健康経営優良法人) certification for nine consecutive years as of 2026, and the "Health Promotion Excellent Workplace Gold" certification from the Japan Health Insurance Association Fukuoka Branch. In 2026, it was recognized as an A-rank excellent company by Tokyo Shoko Research (TSR). The company also acquired all shares of Nakamura Seimitsu Co., Ltd. in January 2023, making it a subsidiary.

Meiho Co., Ltd. was founded on January 18, 1973, in Nogata, Fukuoka Prefecture, Japan. The company established itself as a plastics injection molding manufacturer with integrated capabilities in mold design and manufacturing, molding, and assembly. In April 2000, the company expanded its Third Factory with a composite molding plant. In May 2002, it began mass production of automotive connectors. In August 2002, it established a wholly owned local subsidiary in Hong Kong (Hong Kong Meiho Co., Ltd.) to serve Japanese electronics component makers that had relocated to South China; this subsidiary was later withdrawn due to cost reduction during a business downturn. In May 2005, the Third Factory obtained KES Step 2 environmental management system certification. In October 2007, mass production of connectors for mobile devices began. In January 2008, with the support of an automotive industry advisor, the company learned TPS (Toyota Production System) theory and implemented improvements. In April 2009, it was selected as one of the '300 Vibrant Small and Medium-sized Manufacturing Companies' (元気なモノ作り中小企業300社). In April 2010, Masahachi Toda became the second-generation representative director and president, and the company began mass production of LED components and waterproof mobile phone components (liquid LSR integrated molded products). In May 2012, a Tokyo office was opened. In August 2012, trial and mass production of medical and bio containers using the company's self-developed ultra-small injection molding machine began. In December 2012, the mold factory and molding factory were integrated and reorganized to improve production efficiency. In January 2014, Katsuhiko Nagamatsu became the third-generation representative director and president. In September 2014, injection molding of medical device components began. In August 2016, injection molding and assembly of cosmetic containers began. In January 2017, product design support, prototyping, and small-lot production services were launched. In February 2018, the company received certification as a Health and Productivity Management Outstanding Organization. In August 2018, the Tokyo office was relocated and expanded. In August 2019, a sales agreement was signed with a Taiwan distributor. In May 2020, the company registered as a medical device manufacturer in Fukuoka Prefecture. In July 2020, it began exporting small injection molding machines (μMIV2) to the Taiwan market. In April 2021, it registered as an Eco Office. In January 2023, it acquired all shares of Nakamura Seimitsu Co., Ltd., making it a subsidiary. In July 2023, the company's Nogata Third Factory received the Minister of Health, Labour and Welfare Award (Encouragement Prize) for excellence in safety and health. In October 2023, it was certified as a 'Health Promotion Excellent Workplace Gold 2023-2024' by the Japan Health Insurance Association Fukuoka Branch. In February 2024, the Third Factory obtained ISO 13485:2016 certification for medical device quality management systems. In September 2024, the company was certified under the Ministry of Economy, Trade and Industry's 'Business Continuity Enhancement Plan' (令和6年 事業継続力強化計画). In October 2024, it was certified as 'Health Promotion Excellent Workplace Gold 2024-2025'. In November 2025, it received 'Health Promotion Excellent Workplace Gold 2025-2026' certification for the sixth consecutive year. In December 2025, an employee was recognized with the 'Health Insurance Committee Member Award' by the Japan Health Insurance Association Fukuoka Branch. In April 2026, the company was certified as a 'Health and Productivity Management Outstanding Organization 2026' for the ninth consecutive year. In July 2026, it was recognized as an A-rank excellent company by Tokyo Shoko Research (TSR).

• Meiho Co., Ltd. founded in Nogata, Fukuoka, Japan.

• Third Factory expanded with a composite molding plant.

• Began mass production of automotive connectors.

• Established wholly owned subsidiary Hong Kong Meiho Co., Ltd. (later withdrawn).

• Third Factory obtained KES Step 2 environmental management system certification.

• Began mass production of connectors for mobile devices.

• Learned TPS theory and implemented improvements with automotive industry advisor support.

• Selected as one of the '300 Vibrant Small and Medium-sized Manufacturing Companies'.

• Masahachi Toda became second-generation president; began mass production of LED components and waterproof mobile phone components (liquid LSR integrated molded products).

• Tokyo office opened.

• Began trial and mass production of medical and bio containers using self-developed ultra-small injection molding machine.

• Integrated mold factory and molding factory and reorganized for production efficiency.

• Katsuhiko Nagamatsu became third-generation representative director and president.

• Began injection molding of medical device components.

• Began injection molding and assembly of cosmetic containers.

• Launched product design support, prototyping, and small-lot production services.

• Received certification as a Health and Productivity Management Outstanding Organization.

• Tokyo office relocated and expanded.

• Signed sales agreement with Taiwan distributor.

• Registered as a medical device manufacturer in Fukuoka Prefecture.

• Began exporting small injection molding machines (μMIV2) to Taiwan.

• Registered as an Eco Office.

• Acquired all shares of Nakamura Seimitsu Co., Ltd., making it a subsidiary.

• Nogata Third Factory received Minister of Health, Labour and Welfare Award (Encouragement Prize).

R&D-oriented mass-production manufacturer integrating development, design, mold making, molding, prototyping, and mass production.

• Precision molds for semiconductors

  Designed and manufactured at the headquarters and second factory (mold manufacturing division).

• Blow molding molds

  Part of the mold manufacturing division's product line.

• Injection molding molds

  Precision molds for injection molding.

• Liquid silicone rubber (LIM) molding molds

  Molds for liquid silicone rubber molding.

• Plastic injection molded parts

  Mass-produced at the third factory (molding division).

• LED components

  Mass production began in April 2010.

• Liquid silicone rubber molded products

  Including waterproof mobile phone components (liquid LSR integrated molded products).

• Composite molded products

  Manufactured at the third factory.

• Electronic component assembly

  Assembly services at the third factory.

• Medical device components

  Injection molding began in September 2014; ISO 13485:2016 certified in February 2024.

• Cosmetic containers

  Injection molding and assembly began in August 2016.

• Small injection molding machines (μMIV2)

  Self-developed ultra-small injection molding machine; exported to Taiwan from July 2020.

1. 1株式会社メイホー 公式サイトmeiho-j.co.jp
2. 2会社沿革｜株式会社メイホーmeiho-j.co.jp
3. 3会社概要・アクセスマップ｜株式会社メイホーmeiho-j.co.jp
4. 4Meiho Co., Ltd. (Japan) - Wikidatawikidata.org