... raw material do you use? A: Cold & hot rolled Steel, Stainless steel, Galvanized steel, Aluminum alloy, Brass, Copper, Titanium, Iron, Nylon, or according to ... you provide? A: Polishing, electro polishing, powder coated, hot dip galvanized, zinc/chrome/nickel plating, painting, anodized, passivation, brush, sandblasting, etc ...