Technical characteristics：
The multifunctional shielding card cover has large dimension,
many welding feet, many shrapnel, and complex forming process. It is difficult for precision stamping due to the hardness of stainless steel hard material
Design of convex rib for the control of coplanarity of the forming points and control product
The overall flatness of the product is Max0.05mm, and the weld foot coplanarity Max0.04mm.