... Flat Solar panel 1.Solar Keymark approved 2.Absorber,bluetec eta plus imported from Germany 3.Max. operating pressure: Flat Solar Panel1.CE,CCC,ISO9001,ROHS ,Solar ... integration, freestanding, façade large-scale installation.· High efficiency: Bluetec absorber with highly selective vacuum coating, ... the European requirement.· Permanently sealed and high stability through all-round folded aluminum frame ...