1.Technology of coating: two coating,two baking or two coating,one baking. 2.Base metal of prepainted galvanized coil:cold rolled,hot-dip zinc coated(with small skin pass spangle or not),hot-dip alu-zn coated,electro-galvanized. 3.Coating thickness: top and bottom surfaces 15-20um,back coating 5-7um. 4.Per coil weight: 10 tons max,usually 3-5 tons. 5.Steel coil inside diameter: 508 or 610 mm. 6.Color of prepainted steel coil: As RAL colors or as customers' supplied. 7.Capacity of one year: 400,000 mts. 8.Contacting information: ruichen017 at hotmail dot com.