... ,stamping,bending, welding ISO9001; ISO14000 Name School door lock security Item No. TP030816MaterialSECC, stainless steelProcessstamping,punching,bending,riveting ... , bronze alloy are availableSurface treatmentplating, Zinc plating, enamel, hot-dip, polishing, hardening clear anodizing, chrome plating, nickel plating ... # Warehouse # Carton package # Wood package # Mold School door lock security