... .Production steps Parameter Table ClassificationSteel metal partProductDescriptionPlace of Origin: Shanghai, China (Mainland)Material: Carbon steel; Stainless steel, aluminum alloy; Brass alloy ... plating, enamel, hot-dip, and polishing,etc.CompanyAdvantageMainly Customer: China Unicom, China Mobile Communicati ons, tongji university, etc.More than 100 skilled worders ...