... is available good after-sale service high quality/reasonable price Flat Plate Solar Water Heater Specification1.The Flat Plate Solar Collector is some ... .4. Coating: Anode oxidation film, selective paint, or titanium-coating.5. Tempered glass: High transmittance, good heat preservation ... all copper or aluminum copper complex absorber plate.Selective coating: selective black chrome, magenetic sputtering, ...