Insulated copper tube is used for room and commercial split air conditioner. The copper tube inside of IXPE insulation is suitable for R22, R404, R407 and R410a and conform to EN 12735-1, ASTM B280, AS 1571 standard. Our copper tubes had gained CE certificate and ASTM B280 certificate. The IXPE insulation is UV resistant and conform to UL 94 standard.