... carbon steel, alloy steel, aluminum etc ISO9001 2008 high quality non-standard special nut 1. Material: copper, stainless steel, carbon ... steel, aluminum etc2. Standard/non-standard parts, OEM/ODM is available3. Machining parts, CNC ... , assembly service.4. ISO9001 2000 quality control5. Strong engineering team makes high quality; own test equipments and 100% inspection ...