Hengsheng Energy Co., Ltd is a China-based company engaged in coal-fired thermal power. It supplies steam to paper mills, textile printing and dyeing, food and dairy, home furnishing manufacturing, and other enterprises in the park, and electricity to terminal power users of the state grid. The company also operates in cogeneration, CVD diamond (single crystal and polycrystalline), biomass thermal power generation, photovoltaic power generation, and coal trading, and provides manufacturing equipment, environmental protection technology, and investment consulting services. Its terminal products are mainly lab-grown diamonds, heat sinks, and diamond cutting tools. Formerly known as Zhejiang Longyou Hengsheng Heating Co., Ltd., it was founded in 2007 and is headquartered in Quzhou, China.