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Products DescriptionGalvanized roofing sheet is a steel plate with a layer of zinc on the surface. Galvanized roofing sheet is commonly used economical and effective anti rust surface treatment. and it is used to prevent corrosion of metal sheet from prolonging its service life.There are mainly five kinds of metal plate:1. Alloying galvanized steel sheet2. Electro galvanized steel sheet (EGS)3. One side galvanization and double side differential galvanized steel plate4. Alloy and composite ga