| 1924年 |
Founded in 1924 |
| 1924年03月 |
Miyama Corporation in Shirokane Sanko-cho, Shiba-ku, Tokyo, and begins manufacturing radio parts |
| 1933年03月 |
Utility model rights aquired, and many kinds of radio parts developed, such as chip jacks and vacuum tube sockets |
| 1933年10月 |
Relocated the head office and plant to Ebara-ku, Tokyo, and established Miyama Manufacturing Co. Ltd. |
| 1940年03月 |
Second plant established in Nishi-Togoshi, Ebara-ku, Tokyo |
| 1944年05月 |
Designated as a wartime production plant by the Japanese Navy |
| 1948年05月 |
Company relocates to Kamiikegami, Ota-ku, Tokyo and business resumed |
| 1949年03月 |
The company has been reorganized (name changed) to Miyama Electric Co., Ltd. |
| 1949年03月 |
Established : March 1949 |
| 1953年10月 |
Released a cushioning socket for GT pipe and a new product, the “Minomushi Clip” (practical proposal) |
| 1960年10月 |
Constructed head office building at current location |
| 1962年03月 |
Capital reaches 3.5 million yen |
| 1968年09月 |
UL Certification aquired |
| 1973年12月 |
Magome Branch opened and production department relocated |
| 1974年09月 |
Capital reaches 47.25 million yen |
| 1976年09月 |
Keizo Izawa appointed Chairman of the Board. Ryo Izawa appointed President |
| 1981年03月 |
Nagoya Sales Office opened |
| 1984年06月 |
Capital reaches 94.5 million yen |
| 1985年12月 |
Kisou Takase appointed as President |
| 1986年05月 |
Tamagawa plant opened in Kariyado, Nakahara-ku, Kawasaki City |
| 1996年09月 |
Soichiro Ueda appointed as President |
| 1997年12月 |
Miyama Electric Co., Ltd. aquires ISO 9001 Certification |
| 2000年08月 |
Hideki Matsuyama appointed as President |
| 2002年11月 |
New Head Office building constructed |
| 2003年09月 |
SHANGHAI XINSHAN MOULD MANUFACTURE CO., LTD. established |
| 2004年10月 |
Miyama aquires ISO 14001 Certification |
| 2007年10月 |
SIAM MIYAMA ELECTRIC CO., LTD. established |
| 2013年08月 |
SIAM MIYAMA ELECTRIC CO., LTD. aquires ISO 9001 Certification |
| 2013年11月 |
SHANGHAI XINSHAN MOULD MANUFACTURE CO., LTD. aquires TS16949 (now IATF16949) Certification |
| 2014年03月 |
SHANGHAI XINSHAN MOULD MANUFACTURE CO., LTD. aquires ISO14001 Certification |
| 2015年04月 |
SIAM MIYAMA ELECTRIC CO., LTD. aquires IATF16949 Certification |
| 2021年03月 |
MIYAMA ELECTRIC INDIA PRIVATE LIMITED established |
| 2021年09月 |
MIYAMA ELECTRIC INDIA PRIVATE LIMITED aquires ISO 9001 & ISO 14001 Certification |
| 2023年08月 |
Hideki Matsuyama appointed Chairman of the Board. Fumio Yoshida appointed CEO |
| 2025年11月 |
MIYAMA ELECTRIC INDIA PRIVATE LIMITED aquires IATF 16949 Certification |
