... ,315T to 630T punching machines, totally 20 sets.We can provide in-house design, tool manufacturing, stamping and forging, secondary ... carbon steel, aluminum, zinc, brass, plastic etc.Making process:Stamping, deep drawing, bending, punching, laser cutting, threading, welding , tapping, riveting, grindingSurface ... plating, PVC coating, anodize, E-coating customized precision sheet metal stamping parts