Cherdpong Siriwit

Thaioil Power Co. Ltd. is engaged in generation of electric power. The company operates and manages a natural gas-fired combined-cycle co-generation power plant. Thaioil Power was founded in 1997 and is headquartered in Bangkok, Thailand.

Advance Finance Public Co. Ltd. engages in mortgage loans, real estate financing, and corporate project financing services. It offers lending and funding services and structured finance for debt restructuring, and mergers and acquisitions. The company was founded in 1974 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

Vithai Biopower Ltd. operates a biomass power plant.

Electricity Generating Authority of Thailand engages in the generation, procurement, transmission, and distribution of electricity. It also offers electricity related engineering, construction, maintenance, and consulting services. The company was founded on May 1, 1969 and is headquartered in Nonthaburi, Thailand.