According to the information released by Gaode Map, the second-hand central air-conditioning market in Tianjin is located at Block D 17, Wuqing Mall, Beizheng, wuqing district, Tianjin, and its business scope includes air-conditioning, hotel kitchen equipment, baking equipment, karaoke bar equipment, etc.

The central air conditioning system is composed of one or more cold and heat source systems and multiple air conditioning systems, which is different from the traditional refrigerant air conditioning system.