Hydrotek Public Company Limited 

Hydrotek Public Company Limited, together with its subsidiaries, engages in the investment in, construction, and management of environmental engineering business in Thailand. It is involved in the engineering, procurement, construction, installation, operation, and maintenance of water treatment plants, such as portable water, desalination, and demineralization plants; wastewater recycle and wastewater treatment plants; solid waste treatment plants for sanitary landfills, secure landfills, production of refuse derived fuel, and mechanical and biological treatment for municipal waste management system; and biological wastewater treatment plants to treat wastewater and solid waste from industrial, agriculture, and community. The company was founded in 1982 and is headquartered in Bangkok, Thailand.