... Solar keymark ,EN12975,ISO,SGS,CE,CCC 2.Lifetime:15years 3.Deliverly time:10-15days 4.Best performance Specifications: 1) Water tank ... (interior): SUS304-2B food grade stainless steel2) manifold : aluminum alloy 3) Glass tube: new trivalent element heat tube4) solar ... 1940*350*180certificateEN12975-1,2 SOLAR KEYMARKEN12975-1,2 SOLAR KEYMARKEN12975-1,2 SOLAR KEYMARK Material vacuum tubehigh ...