... , Stud weldingC: Polishing, Belt brushing, fine brushing, standing sponge brushing, dual shaft brushing,D: Spray-paint and powder coatedE ... 4: professional laboratory equipment ensure products precision : Salt spray corrosion tester, Multi light color comparison cabinet, Film ... ,GE (for car) etc.6: Drawings: 3D, 2D, CAD, Photoshop, Adobe Illustrator etc. Die stamping, polishing metal, stainless steel ...