முக்கிய விவரங்கள்
பொருளின் முறை:快递
பொருள் விளக்கம்
Color-coated coils use hot-dip galvanized steel coils as the substrate, and the color-coated steel coils are first surface pretreated, then coated with one or more layers of liquid coatings by roller coating, and finally baked and cooled.