... with twin-glass tubes 4.CE, Solar keymark Features of separated pressurized solar energy water heater:1) Designed for home, ... CCC, ISO9001:2000 and EN-12975 Solar Keymark certificate. solar energy water heaterDescription of solar energy water heater:Manifold casing materialAluminum alloy/Stainless ... sets of SC58-1.8-30. We, Changzhou Erjin Solar-Energy Equipment Making Co.,Ltd, are established in 1989. ...