... s design, welcome to send inquires. sheet metal progressive stamping heat sinks1. Provide in-house design 2. Accurate ... sets.We can provide in-house design, tool manufacturing, stamping and forging, secondary machining and coating service. Your ... steel, carbon steel, aluminum, zinc, brass, plastic etc.Making process:Stamping, deep drawing, bending, punching, laser cutting, threading, welding , ...