Siamraj PCL engages in the procurement, distribution, and installment of industrial pumps and natural gas for vehicles; and the construction of natural gas metering and pipeline transmission systems. It operates through the following segments: Industrial Pumps; Natural Gas Metering and Transmission Systems; Alternative Energy, Field of Flow Measurement Business, and Other Business. The company was founded on February 20, 1984 and is headquartered in Samut Prakan, Thailand.