Manop Saeng-Ngern

Part of Chevron Corp., Unocal Thailand is a company that explores for, develops, produces, and markets crude oil and natural gas. The company is based in Bangkok, Thailand.

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.

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.