| Oct. 1970 | Hoyo Electric Industries was launched in the Umibe of Koto Ward in Tokyo with capital of 500,000 yen. |
|---|---|
| Dec. 1973 | Company name was changed to Hoyo Co., Ltd. |
| May 1975 | Capital increased to 2,000,000 yen. |
| July 1978 | Capital increased to 6,000,000 yen. |
| April 1984 | Headquarters was relocated to a new building constructed in Ogibashi, Koto Ward in Tokyo. |
| Jan. 1990 | New Chiba Plant was constructed. Capital increased to 24,000,000 yen. (Authorized capital: 96,000,000 yen) |
| Dec. 1994 | Headquarters was relocated to a new building constructed in Midori, Sumida Ward in Tokyo. |
| Jan. 1995 | Capital increased to 48,000,000 yen. |
| July 1995 | Opened the Yokohama Branch. |
| May 1996 | Launched the Die Manufacturing Division at the Chiba Plant. |
| Aug. 1999 | Opened the Numazu Plant (equipped with clean room). |
| Aug. 2001 | Opened the Tokai Plant and Tokai Sales Office. |
| June 2004 | Opened the Chiba No.2 Plant (equipped with clean room). |
| July 2004 | Established Hoyo Trading Hong Kong Co., Ltd. |
| Sept. 2005 | Acquired ISO9001 certification. (Headquarters, Yokohama Branch, Tokai Sales Office, Chiba Plant, Numazu Plant, Tokai Plant) |
| Oct. 2006 | Established Guangzhou Hoyo Precision Electronic Co., Ltd. |
| Dec. 2009 | Acquired ISO9001 and ISO14000 certification (Guangzhou Hoyo Precision Electronic Co., Ltd.). |
| Oct. 2012 | Closed Tokai Sales Office, Combined into Yokohama Branch. |
| Jan. 2013 | Established Suzhou Hoyo Precision Electronic Co., Ltd. |
| Oct. 2013 | Moved Hoyo Trading Hong Kong Co.,Ltd. and official opened. |
| Aug. 2014 | Acquired ISO9001 and ISO14000 certification. (Suzhou Hoyo Precision Electronic Co., Ltd.) |
