Pongtham Danwangderm

Part of Trinity Watthana Public Co. Ltd., Trinity Securities Co., Ltd. is a Thai company that provides brokerage services. The company is based in Bangkok, Thailand.

Part of Asia Biomass Public Co., Ltd., Alpha G Venture Co. Ltd. is a Thai company that manufactures wood chips. The company is based in Bangkok, Thailand.

Krungsri Capital Securities PCL engages in the provision of securities brokerage services. It specializes in the securities brokerage, derivatives brokerage, financial advisory, underwriting, fixed income trading, securities borrowing and lending, and selling agent businesses. The company was founded on May 26, 1970 and is headquartered in Bangkok, Thailand.

PTT Chemical Public Co. Ltd. is engaged in the production and distribution of Ethylene, Propylene and Polyethylene. The company's by products are Mixed C4, Pyrolysis gasoline, Cracker bottom and tail gas. PTT Chemical is also involved with the production and distribution of electricity, water, stream, and other utilities. It operates production support facilities such as jetty and buffer tank farm services for liquid chemical, oil and gas. The company was founded December 7, 2005 and is headquartered in Bangkok, Thailand