Unique quad is run by a management system, in which each Group company shares management ideas, a set of values and “aspirations” while developing independently and cooperating with each other where cooperation is possible. The competitive edge and presence of the Group as a whole are thus enhanced and the wide ranging needs of the customers are met by the comprehensive power of the Group.

Power Plant

Global Power Synergy Public Company Limited (GPSC)

Electricity Generating Authority of Thailand (EGAT)

Gulf Energy Development Public Company Limited (GULF)

Petro-Chemical Plant

PTT Group

SCG Group

Bangchak Corporation Public Company Limited (BCP)

IRPC public company limited (IRPC)

Thai Oil Public Company Limited (THAIOIL)

Star Petroleum Refining Public Company Limited (SPRC)

Indorama Ventures Public Company Limited

Ube Industries, Ltd.


Michelin Thailand

Bridgestone A.C.T (Thailand) Company Limited

Metropolitan Waterworks Authority (MWA)

TOA Paint Thailand PCL