... passed CE, CCC, ISO9001:2000 and EN-12975 Solar Keymark certificate. solar energy water heaterDescription of solar energy water heater:Manifold casing materialAluminum alloy/Stainless steelFrame materialAluminum alloy ... leading manufacturer of Solar Water Heaters (SWH), including Compact Non-pressurized SWH, Compact Pressurized SWH, Split Pressurized SWH and Flat-plate type SWH.For ...