| Date | Events |
| Jun. 1974 | Established Tension Electronics Co., LTD in Taipei, and bought industrial state in Taoyuan. |
| Jun. 1980 | Established Tension Steel Industries Co., Ltd. |
| Jun. 1990 | Established Hsinchu Factory. |
| Oct. 1990 | Approbate public offering. |
| Nov. 1994 | Import the pipes' hot dip galvanizing production line from Japan. |
| Sep. 1996 | Acquire ISO9001 Certificate from The Bureau of Standards, Metrology and Inspection (BSIM), Ministry of Economic Affairs, Taiwan, R.O.C. |
| Dec. 1996 | Win the CNS Certificates from Ministry of Economic Affairs, Taiwan, R.O.C. |
| Jun. 2004 | Established Gangshan Factory. |
| 2009 | Got API Certification. |
| 2014 | Established LuZhu Factory, square measure:9,600㎡,., new API (Sizes: 2-3/8~5-1/2) production line for 2000-3000 MT/per month. |
| 2019 | Obtained JIS Certification |
| 2020 | A new HDG production line was installed at Gangshan mill and started to develop the market. |
| 2021 | New production line installed at Luzhu mill. Product size range expanded. Smart manufacturing implementation starts. |
