... titanium flat panel solar water heater Certificate: SRCC, Solar Keymark, CE and ISO9001 flat panel solar water heaterProduct introductionsThe split ... flat plate system contains solar flat plate collector, storage water tank, pump station with controller, expansion vessel, pipings, ... electic heater.Size: 150L, 200L, 250L, 300L, 400L, 500L with single coil or double coils inside tank.Specification:1) ...