heat pipe collector: size:58/1800,47/1500, have CE,ISO9001,ISO14001, CCC certificates, can install anywhere, offer OEM heat pipe collector:size: 47mm,1500mm,/58mm,1800mm, tube quantity according the tank capacity,copper pipe: material purple copper,glass tube: high borosilicate 3.3, thickness: 2.0mm,insulation: rock wool, and import PU,hailstone resistance: 25mmbracket: aluminum alloy, thickness: ...