CNC machining ISO 9001 1.Material: brass 2.Finish: Zinc plating, Nickel plating and ... plug gauge and other regular gauges.(5)Certificate: SGS ISO 9001:2000(6)Brief introduction of our experience cooperated with some ... , Huanxiu street, Jimo, Qingdao, Shandong province, China CNC machining ISO 9001