Bangkok Synthetics Co., Ltd.
BST Elastomers Co., Ltd.
Padaeng Industrial Company Limited
MC Towa Sweeteners Company Limited
Shin Etsu Company Limited
Eastern Industrial Gas Company Limited
Purac Thailand Company Limited
TEX Thailand Company Limited
TOL Company Limited
Vinythai Company Limited
Thai MMA Company Limited
Air Liquid Thailand Company Limited
Advance Agro Company Limited
PTT Separation Plant Co., Ltd.
PTT Phenol Co., Ltd.
HMC PHD and PP Co.,Ltd.
Glow Energy Company Limited
PTT Utility CUP #1
PTT Utility CUP#2
Nong-kea Sarabury
Keng Koi Sarabury
EGAT, Wangnoi, Ratchaburi, Nongchok
TOC Glycol Company Limited
IRPC Public Company Limited
HMC Polymers Co., Ltd (PP Plant)
Linde (Thailand) Public Company Limited
Emerson (Thailand) Limited
TPC
NS-Siam United Steel Co., Ltd.