... certificate 3. tolerance:0.05mm-0.2mm surface anodizing sunflower aluminium profile parts 1. material: stainless steel2. ISO certificate3. tolerance: ... step 1) Material: Steel, Brass, Copper, Stainless steel, Plastic, Aluminium, POM, Delrin, Titanium Alloy etc.2) Surface treatment:Zinc plating ... competitive price and excellent service. FactoryProducts surface anodizing sunflower aluminium profile parts