| 1955 | - | Shihlin Electric was established by founder Mr. Chin-Te Hsu |
| 1963 | - | Technology cooporated with Mitsubishi Electric Japan |
| 1966 | - | Manufactured 69kV class power transformer |
| | - | Automobile & motocycle parts plant |
| 1969 | - | Public stock exchange listed |
| | - | Switchgear Panel Plant |
| 1972 | - | Current/Voltage transformer plant established |
| 1973 | - | Breaker & switch plant established |
| 1979 | - | Manufactured 161kV class Power Transformer |
| 1984 | - | Factory Automation plant established |
| 1988 | - | Cast resin transformer plant established |
| 1990 | - | Mrs.Suzanne Hsu succeeded Mr. C.T Hsu as Chairman |
| 1994 | - | Automobile & Motocycle plant established in Vietnam |
| | - | Received ISO90001 certificat |
| 1995 | - | Automobile plant established in Chang-Zhou, China |
| | - | Breaker & Switch plant established in Xia-Men, China |
| 1997 | - | Headquarter office building completion |
| 1998 | - | Received ISO14001 Certificate |
| 1999 | - | Mr. Emmet Hsu succeeded Mrs. Suzanne Hsu as Chairman |
| | - | Sysetem engineering & optoelectronics division |
| | - | Digital products sales division |
| 2000 | - | Manufactured 345kV class power transformer |
| 2001 | - | Capacitor plant established in Su-Zhou, China |
| | - | Automobile plant established in Wu-Xi, China |
| | - | Automobile Plant established in Fu-Zhou, China |
| 2002 | - | 345kV, 650MVA Power Transformer in service |
| 2003 | - | 161kV SF6 transformer, GIS, 24kV CRTR & Panel delivered to Taipei 101 |
| 2004 | - | Oil immersed distribution transformer plant established in Vietnam |
| 2007 | - | Received OHSAS 18001 certificate |
| | - | Received KEMA, SCB10-GB certificate for cast resin transformer |
| 2008 | - | 345kV, 717MVA transformer in service |
| | - | Shihlin Electric USA Ltd. established |
| 2009 | - | Shihlin Electric AUS PTY Ltd. established |
