... tubes, environmental protection copper water tubes and copper fittings.The main products are: LWC, Pancake Coils, ACR Straight Tubes, Capillary Tubes, Copper Water Tubes ... , Copper Fittings, insulated Copper Tubes and Plasic-coated Copper Tubes. 3 ... best quality4 The main application of aluminum tubes: Automotive heat exchangers, air conditioning ...