To assure functional need, pillar must have certain tigidity and amortize property, sponsorial when side direction is pounded body is safe. If use method of traditional strike out form to need to design reinforcement additionally, and use technology spelling solder, can go all out the armor plate of two different ply solder to be rectified into first board, next punch shapes. Solderer Cheng goes all out in laser in, the position that can adjust welding line will satisfy shape need, intensity and hardness can resist of side direction collide, control better bend. CNC Milling