China Zenith Chemical Group Limited, an investment holding company, generates and supplies heat and power in the People's Republic of China. It operates through three segments: Heat and Power, Calcium Carbide, and Construction Service. The company supplies heat for residential use; and produces and sells calcium carbide, vinyl acetate, and polyvinyl-chloride.

It also engages in the construction and monitoring of public facilities; and provision of municipal engineering construction, and administrative and consultancy services. The company was formerly known as Xinyang Maojian Group Limited and changed its name to China Zenith Chemical Group Limited in April 2022. The company is headquartered in Wan Chai, Hong Kong.