TTCL Public Company Limited, together with its subsidiaries, designs, procures, and constructs integrated industrial factories in Thailand and internationally. It operates through three segments: Energy Business, Construction Business, and Manufacturing and Distribution. The company provides engineering design services for civil structures and utility systems, including electricity, water, air conditioning, solid and wastewater treatment, storage tanks, production processes, and petrochemical and chemical plants, and also procures machinery and equipment. It generates and sells electricity, invests in and develops renewable energy power plants, and invests in the energy business. In addition, it offers conceptual, pre-feasibility, and detailed feasibility study services, manufactures and distributes white pallets, and provides torrefaction technology licenses. The company was formerly known as Toyo-Thai Corporation Public Company Limited and changed its name to TTCL Public Company Limited in April 2015. Incorporated in 1985, it is headquartered in Bangkok, Thailand, and is a subsidiary of Italian-Thai Development Public Company Limited.