Siamgas & Petrochemicals Public Co. Ltd. engages in the sale and production of liquefied petroleum gas, ammonia, and other petrochemical products. It operates through the following segments: Petroleum and Petrochemical Products, Transportation Services, and Other Business segment. The Petroleum and Petrochemical Products segment offers products for household cooking, industry, and transportation business. The Transportation Services segment provides freight services by land and ship. The Other Business segment includes cylinder manufacturing. The company was founded on January 17, 2001 and is headquartered in Bangkok, Thailand.