... 1- Material: Spring steel 2- High precision&strict quality control 3- Experienced high technology ... can design and make complex precision tooling ourselves, and manufacture all kinds of sheet metal brackets as required . DesignAccording ... satin, etc.Processing MethodDeep drawing , stamping , punching, bending, CNC spinning, CNC machining, milling, drilling, grinding, Arc welding , seamless welding, ...