... size ,high qulity and perfect finish on surface. Metal Screw is made by one of the CY hareware manufacturer ... painting ,powder coating,polishing, threading, sand casting3.different shapes and sizes are workable4.feature:high precision,high quality,reasonable ... sand blasting, polishing, plating, acid treatment, anodizing, painting and PVC powder coating (enamel)6.Inspection: coordinate measuring machine ...