1975 "STPRESS" was established for manufacturing steel structures and pressure vessels, located in Bangkok
1990 Changed company name to “Sino-Thai Pressure Vessel & Iron Works”, fabrication capacity 20,000 ton per annum of Steel Structure, Pressure Vessels and Boilers
1994 Moved to new plant in Chonburi, capacity 30,000 tons/annum
1995 Registered as a public company and changed name to "STP&I Public Company Limited."
1997 Obtained Certification to ISO9001 for Structural Steel Work
1998 Established Inter-IMC, a mechanical contractor, in Singapore
1999 Expanded to 2nd workshop in Rayong, capacity 20,000 tons/annum, total capacity 50,000 tons/annum
2000 Obtained Certification to ISO9001 for pipe spool fabrication shop
2004 Partnership with Clough (Thailand) Limited and established Clough Sino-Thai Company Limited (CST) for Module Fabrication at module yard located in Sattahip Navy Dockyard
2007 Established Module yard at Laem Chabang Port named "Laem Chabang Module Yard"
2007 Established a new pipe shop at Sriracha named "Sriracha Pipe Shop"

STP&I recently focused on the international market and aggressively pursued pre-fabricated exports of structural steel, piping and module with exporting target over 20,000 tons per annum of pre-fabricated steel, pipe spool and module.