Shanghai Dazhong Air Conditioning Equipment Co., Ltd. is a central air conditioning and air-conditioning system, new exhaust system (ventilation engineering) design, installation, air conditioning and refrigeration equipment sales, maintenance, repairs, air conditioning and refrigeration equipment, ventilation equipment, accessories in one of the professional business . Main Products are: Carrier, York, Trane and other large central air conditioning parts; Danfoss, Sporlan, Emerson and other ...