... steel surface finished: zinc plated application: electric,machine,equipment sheet metal stamping partsspecification1. Material: carbon steel, stainless steel, alum alloy, brass ... powder coating,zinc plated, anodizing,electrophoresis3. Process: CAD serice, metal processing, surface plating, QC testing and packing4. Package: standard ... are OEM for reference, not for sales sheet metal stamping parts