- Year 1976 – IRON TRUST CORP. as a Parent Company was established in Taiwan. The Company has grown to become a professional die maker, manufacturing all sorts of ALUMINUM DIE CASTING MOLDS world wide.
- Year 1997 – PT. TEH HSIN INDUSTRY INDONESIA was founded in Indonesia, located in JABABEKA Industrial Estate, Cikarang - Bekasi as a mass production factory producing Gravity Die Casting (GDC) parts and Low Pressure Die Casting (LPDC) parts. Principal Approval for establishment of PT. Teh Hsin Industry Indonesia was granted by Republic of Indonesia Investment Coordinating Board Decree dated May 26, 1997.
- Year 2003 – PT. TEH HSIN INDUSTRY INDONESIA commenced operation after obtained Industrial Business License decree from Republic of Indonesia Minister of Industry dated October 30, 2003.
- Year 2004 – PT. TEH HSIN INDUSTRY INDONESIA started mass production for Body and Cylinder Head.
- Year 2013 – The name of PT. TEH HSIN INDUSTRY INDONESIA was changed to PT. TESHIN INDONESIA after obtained approval from Indonesian Minister of Justice and Human Rights decree No: AHU-61923.AH.01.02 Th.2013 dated November 28, 2013.
PT. Teshin Indonesia Update : 11 Desember 2014