1.SRCC,Solar keymark,SGS,CCC,ISO,CE,EN12975,New Solar keymark 2. Lifetime: 15dyears Feature:1.the pipeline is made of all the red copper and conducted by heat transfer medium liquid..water can't flow in vacuum tubes and operated when confined.the manifold uses Aluminum alloy mould material of high strength wiht air folw design.it is furnished in good style.2.can withstand high pressure when it ...