... well as suppresses the thermal emittance loss from the coating. With the help of DC magnetron sputtering technology, the absorptance of ... coating from bursting, aging, discoloring, function attenuating because of long time burn under the sun, prolonging its life span to 15 years ... alkali proof above Grade 2. It can resist the hailstone with Diameter 25mm, resisting pressure 1MPa.4. Reducing the fouling ...