... water heater manufacturer with CE & ISO in Changzhou, China. Specification:1) Tank: (SKI-TCB) Tank material (exterior): Colored Steel Sheet ,Thickness ... Heating Element , Mg Anode , T&P Valve , Sensor,Single copper coil (diameter: 16mm, thickness: 1mm) One way valve,drain valve2 ... to heat.Low Price, High Quality! Complete Solar split system with single copper coil SKI-SB with CE & ISO from SKI SOLAR