... stainless steel, carbon steel, alloy steel, aluminum etc ISO9001 2008 self clinching standoff 1. Material: copper, stainless steel, carbon steel, ... welding parts, assembly service.4. ISO9001 2008 quality control5. Strong engineering team makes high quality; own test equipments and 100% inspection prior ... on the demand quantity. If you have any design of the metal parts, please inform us, we can make ...