... and air-condition industry in dozens of years.“P,T,C,Q,S”(People, Technology, Cost, Quality, Service) Theory and ... -conditioning and refrigeration.Feature:1.Semi-closed 5:6 asymmetric twin-screw compressor from world-renowned brand,trouble-free operation over ... 3. Fluoride-resistant high-performance motor from French. 4.Dual compressor, two independent sets of refrigeration system. Each other back-up ...