... air-conditioning, and its air-cooled heat pump technology and screw machine application technology obtained great reputation in the refrigeration and ... air-condition industry in dozens of years.“P,T,C,Q,S”(People, Technology, Cost, Quality, Service) Theory and ... -screw compressor from world-renowned brand,trouble-free operation over 100,000 hours. 2.Eightr stage volume control or 0%-100% automatic ...