Converter box Material:SGCC;Thickness:0.8mm;Molding. process:blanking;punching;red salad hole; ... line;Tooth extraction. Stamping Converter box:1. Material:SECC2. Thickness:0.8mm.3. Molding process:blanking;punching;red salad hole ... testing equipment: Micrometer, pin gauge, torque meter, Salt spray tester, 2D projector, micro-density tester, digital coating thickness gaugeOur testing control system ...