Beijing Ruibao Li Energy Technology Co., Ltd. specializes in the design and construction of heating and air conditioning systems using primary sewage source heat pumps, sewage source heat pumps, water source heat pumps, and ground source heat pumps. The company also focuses on the research and development and manufacturing of equipment for collecting thermal energy from primary sewage. It possesses a complete set of proprietary technologies for primary sewage source heat pump heating and air conditioning systems, which are independently innovated and internationally leading. This technology makes it possible to use primary sewage on a large scale as a heat source for heating and cooling, elevating energy conservation, environmental protection, and water resource recycling technology to a new level.