... : Zinc plating, Nickel plating and chromate plating 3.ISO9001:2008 3/4'' Brass Gate Valve1. Product IntroductionItem DescriptionName Brass ... : precision electronic parts, fasteners, and other jeweler accessories.(3) Main equipments: CNC lathe, Auto-lathe, meter lathe ... , pressing and forging machine, polishing equipment, etc.(4) Main inspection devices: digital projector, Rockwell hardness tester, ...