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: Procurement, Distribution, and Installation of Industrial Pumps; Construction of Natural Gas Metering and Transmission Systems; and Natural Gas For Vehicles. The company was founded on 1976 and is headquartered in Samut Prakan, Thailand.