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The commonly used thickness specifications of the exterior wall aluminum sheet have 1.5mm 2.0mm 2.5mm 3.0mm 3.5mm and 4.0mm. The coating is coated by fluorocarbon resin (PVDF), polyester resin spraying (PET), electrostatic powder spraying three types. The usual thickness of ceiling aluminum ceiling is 0.6mm, 0.8mm, 1.0mm, 1.5mm 2.0mm 2.5mm. Three types of coating were sprayed by fluorocarbon resin (PVDF) and polyester resin spraying (PET) electrostatic powder. wechat: sdjxjc