1.ISO system certification. 2.Material:Stainless steel,Carbon steel. 3.OEM/ODM orders are ... lathe machine, thread rolling machine, drilling machine, tapping machine, etc 2 ) Measuring & testing equipment: Measuring Projector , concentricity tester, hardness tester, ... products , medical equipment, mobile phone, Camera ,gas stove, gas heater, furniture etc. bolts screws stainless steel fasteners