... quality control 4.better price for large volu Item NameElectric mini USB connectorsManufactureequipmentHigh-speed precision punches of 16 tons to 160 ... material as requestedEngineerExperienced technical and professinal engineerMaking processProgression die, Deep drawing, Grinding, Stretch, Punch, Bending, Surface treatment and Assembly,TappingDesignMould design ...