pre-painted galvanized steel coil,PPGI,color painted steel,RALcolor,thickness 0.18-1.50mm,width 914,1000,1200, ... degrease, rinse, chemical transform the cold-rolledsteel coils or galvanized steel coils. Then we make primary and refined lavation for the ... capability of decoration, molding,corrosion resistance ability. It keeps the products with color coatings inflamboyant color for a long time.Nowadays ...