Anti-UV, good heat resistance, low water absorption Copper thickness compatible any gases: R22-R407C- R410A-R404A-R507C etc. China Ningbo Jintian Copper Tube Co.,Ltd. is a wholly owned sub-company of Jintian Group, it is specialized in HVACR copper tubes, environmental protection copper water tubes and copper fittings.The main products are: LWC, Pancake Coils, ACR Straight Tubes, Capillary Tubes, ...