Chitrapongse Kwangsukstith

PTT Asia Pacific Mining Pty Ltd. operates as a holding company with interests in coal mining salt projects. It offers services through its subsidiaries. The firm mainly serves the mining and metals industry. The company was founded in 1996 and is headquartered in West Perth, Australia.

PTT Aromatics & Refining Public Co. Ltd. manufactures cyclic organic crudes and intermediates. The company's principal activities are aromatics and refinery businesses. It supplies and refines petroleum products, such as liquefied petroleum gas, light naphtha and reformate, middle distillates including jet fuel and diesel and heavy products including fuel oil. The group is also engaged in the production and sale of aromatics products, which includes benzene, paraxylene, orthoxylene, toluene and mixed xylenes. The company was founded on September 13, 2007 and is headquartered in Bangkok, Thailand.

PTT International Co. Ltd. provides petroleum exploration services. It offers petroleum products. The company was founded on October 1, 2007 and is headquartered in Bangkok, Thailand.

Part of China Green Energy Ltd., Green Energy Holding Co. Ltd. operates as an investment holding Caymanian company with interest in waste incineration and power generation.

PTT Energy Resources Co. Ltd. is a Thai company that provides coal and mining services. The company is based in Bangkok, Thailand and was founded in 2009. The company is ultimately controlled by the Government of Thailand.