Features:1) Flat panel core: copper-aluminum compound core or all-copper core, the core's diameter is 10mm, heat-pipe's diameter is 25mm.2) Coating: adopts black chrome or selective adoption coating, has a long service life.3) Surface glass: tempered glass with 5mm thickness, has high translucent, tightly for long time.4) The aluminum alloy frame with electricity paints, with a beautiful shape, 
Solar Water Heater