... for (A/C) Air Conditioner System The Biggest Manufacturer in China (Air Ducting,Insulated & Non-insulated Air Flexible Duct & Silent ... the enviroment area, such as hospital, laboratory, howff, bus, train, broadcasting studio.PROPERTIESVALUEDiameter Range75-750mm (3"-30") ... for low and medium pressure heating, cooling, ventilation, air conditioning, exhaust and dust extraction systems. Cloth based pvc ...