insulation copper tubes for air conditioner Size: 1/4", 3/8", 1/2", 5/8", 3/4" Material: according to the customer's requireme ... are widely applied in the vehicle, ships, buildings, chemical engineering, air condition, refrigerator, etc.Standard Complied: ASTM B-280, EN-12735 ... prepayment Packing: seaworthy strong carton box insulation copper tubes for air conditioner