Dongguan Dalang Guosong Refrigeration Equipment Business Department, whose business scope includes general items: sales of refrigeration and air conditioning equipment; Sales of household appliances; Sales of household appliance parts and accessories; Sales of fans and fans; Sales of gas compression machinery; Sales of plastic products; Home appliance installation services; Installation services for general mechanical equipment; Maintenance of electronic and mechanical equipment (excluding special equipment); Professional cleaning, cleaning, and disinfection services; Special equipment repair; General equipment repair; Electrical equipment repair; Professional design services.