SAN-EI Electronic Industries Co., Ltd.

SAN-EI Electronic Industries Co., Ltd. is a Japanese company based in Komoro, Nagano, founded in 1958 (Showa 33) with capital of 1.5 million yen, initially manufacturing electric wires and electrical components. It describes itself as a top-share maker of fine wire for the electronics industry. Its main products are magnet wire, edgewise coils and system development products. The company has established overseas affiliates including San-Ei Thailand and San-Ei Magnet Wire Thailand, and has obtained ISO-9001 and ISO-14001 certifications.

SAN-EI Electronic Industries Co., Ltd. was founded in Showa 33 (1958) with capital of 1.5 million yen, establishing its head office factory in Mikagenitta, Komoro City, and beginning manufacture of electric wires and electrical components. It received the first application of the Komoro City factory attraction ordinance and the Nagano Prefecture factory attraction ordinance. In Showa 37 (1962) capital was increased to 24 million yen and a new factory was built at 15 Kashiwagi, Komoro City. In Showa 38 (1963) capital was raised to 32 million yen and, through a tie-up with Sumitomo Electric Industries, Ltd., it decided to newly establish an electrical equipment division, becoming a factory licensed to display the Japanese Industrial Standards (JIS) mark. In Showa 39 (1964) it concluded a technical assistance agreement with Sumitomo Electric Industries and received approval as a designated factory. In Showa 43 (1968) it was designated by NEC Corporation as an A-class certified factory for magnet wire. In Showa 44 (1969) it increased capital by 32 million yen and converted 20 million yen of convertible bonds underwritten by Tokyo Small and Medium Business Investment & Consultation Co., Ltd. into capital, bringing capital to 100 million yen. In Showa 52 (1977) it began planning, designing and manufacturing various computers and related equipment through a capital and technical tie-up with Nippon Minicomputer System Co., Ltd. In Showa 57 (1982) it opened a Tohoku sales office in Tendo City, Yamagata Prefecture. In Showa 58 (1983) it established an information equipment division. In Showa 59 (1984) it issued a second convertible bond of 100 million yen and established a secondary processing field in the wire manufacturing department, starting secondary processing of magnet wire and STP motor winding. In Heisei 1 (1989) it converted 100 million yen of convertible bonds into capital, bringing capital to 200 million yen. In Heisei 4 (1992) it acquired a factory construction site of 10,000 tsubo in the Hirahara factory park in Komoro City and obtained UL certification for magnet wire. In Heisei 5 (1993) it established San-Ei Thailand Co., Ltd. with the expansion of the VCM coil business. In Heisei 9 (1997) it completed the first phase of construction of the Hirahara factory. In Heisei 11 (1999) it obtained ISO-9001 certification for quality control and assurance in magnet wire design and manufacturing. In Heisei 13 (2001) it obtained ISO-14001 certification at all offices including head office, Wada factory, Hirahara factory and the electronic equipment division. In Heisei 14 (2002) it began commercialization and mass production of vertical coils and established San-Ei Magnet Wire Thailand Co., Ltd. to secure users and markets for magnet wire for automotive electrical equipment. In Heisei 15 (2003) it received approval as a business eligible for the Small and Medium Enterprise Management Innovation Support Act for vertical coils, and expanded its head office building. In Heisei 17 (2005) it increased capital by 80 million yen to 280 million yen and installed a class 100 clean room. In Heisei 19 (2007) it increased capital by 77 million yen to 357 million yen. In Heisei 20 (2008) it marked its 50th anniversary. In Heisei 21 (2009) it completed the second phase of the Hirahara factory. In Heisei 26 (2014) it commercialized and began selling the pet automatic feeder 'PETLY' of RINN Co., Ltd., and jointly developed and commercialized a 'concrete filling watcher' with Fujita Co., Ltd.; it also received the Nagano Prefecture Governor's Award as an excellent business establishment for employment of persons with disabilities. In Heisei 27 (2015) it switched mainly production-site lighting to LED. In Heisei 28 (2016) it introduced a laser stripping device. In Heisei 29 (2017) it received a Governor's commendation as a fire brigade cooperation business establishment. In Heisei 30 (2018) it marked its 60th anniversary.

Top-share maker of fine wire for the electronics industry

• Magnet wire

• Edgewise coil

• System development products

1. 1三映電子工業株式会社san-ei-elt.co.jp
2. 2沿革 | 三映電子工業株式会社san-ei-elt.co.jp
3. 3企業情報 | 三映電子工業株式会社san-ei-elt.co.jp
4. 4製品紹介 | 三映電子工業株式会社san-ei-elt.co.jp