... accepted. 1: OEM with 11 years experience works in metal die stamping, die casting,and chemical etching products process. ... point welding, Argon-Arc welding, CO2 welding, Stud weldingC: Polishing, Belt brushing, fine brushing, standing sponge brushing, dual shaft ... 3D, 2D, CAD, Photoshop, Adobe Illustrator etc. Die stamping, polishing metal, stainless steel,aluminum plates, push plates,push switches