... Group, it is specialized in HVACR copper tubes, environmental protection copper water tubes and copper fittings.The main products are: ... Pancake Coils, ACR Straight Tubes, Capillary Tubes, Copper Water Tubes, Copper Fittings, insulated Copper Tubes and Plasic-coated Copper Tubes. Being of the top ... make with black rubber material4.The two ends of tubes can be covered with copper head5.These are common ...