Kyoho Machine Works Ltd. (Japan)

Kyoho Machine Works, Ltd. (株式会社協豊製作所) is a Japanese company founded in 1949. It has consistently supported the automobile industry's manufacturing from various angles, contributing to customers and local communities. The company operates four complementary businesses: body parts, E parts, equipment, and factory services.

Founded in March 1949 as a company for recycling and selling end plates. In 1954, established a department for manufacturing factory equipment and facilities. In 1956, started polishing parts for passenger car bumpers. In 1958, established a department for refining various machine oils. In 1960, established a department for machine tool repair, remodeling of special-purpose machines, and manufacturing of jigs and tools. In 1964, established a machining department for automobile parts. In 1967, established a processing department for automobile press parts. In 1969, established the Ohara plant (world's largest bumper polishing line). In 1973, merged with Hikari Manufacturing Co., Ltd. In 1985, established the Tahara office. In 1986, increased capital to 1,088 million yen. In 1987, established the second machine factory. In 1988, established a precision mold factory. In 1989, received the Aichi Prefectural Labor Standards Bureau Director's Progress Award (Ohara plant). In 1991, established the Otowa plant. In 1998, established Kyoho System Service Co., Ltd. (now Kyoho Factory Service Co., Ltd.). In 1999, acquired ISO14001 certification. In 2001, established an EV/electrical equipment plant (for mass production of electronic and precision parts). In 2002, added a parts factory to the Tahara office. In 2003, established a training center. In 2005, acquired ISO9001:2000 certification (E parts business). In 2006, received the Toyota Technical Development Award for developing a high-output nickel-metal hydride battery exclusively for hybrids. In 2007, established KHMCA (Kyoho Manufacturing California) (closed in March 2010). In 2013, established the second Otowa plant. In 2016, established KTMEX (Kyoho Toyotsu Mexico) (started operation in 2019). In 2016, established the Otowa welfare building. In 2024, celebrated the 75th anniversary of its founding. In 2025, acquired IATF16949:2016 certification (Ohara plant).

1. 株式会社協豊製作所
2. 会社沿革｜会社情報｜株式会社協豊製作所
3. 会社情報 | 株式会社協豊製作所
4. ISO認証｜会社情報｜株式会社協豊製作所
5. Kyoho Machine Works Ltd. (Japan)