Hai Yan Lü

Tianjin Fangxin Heating Co., Ltd. engages in the production and supply of steam and hot water; plumbing installation and repair; the provision of related labour services; the supply of chemicals, decoration materials, building materials, as well as metal and electric hardware; geothermal technology development; and the provision of refrigeration services. The company was founded on September 23, 1992 and is headquartered in Tianjin, China.

Tianjin Heavy Heat Heating Technology Engineering Co., Ltd. engages in energy, electronics, and information technology. The company was founded on April 29, 2001 and is headquartered in Tianjin, China.