The spaying is a common seen coating method of color coated aluminum sheet, while the electrostatic spraying has powder spraying and fluorocarbon spraying two types. The powder coated aluminium sheet is processed by powder spaying which have low cost and applied in curtain walls. The raw materials of powder coating polyurethane, polyurethane resin, epoxy resin, hydroxy polyester resin and epoxy/polyester resin,.. read more →