... 4)One stop solution Precision metal stamping part for electrical equipment MMT's has been supplying high precision Deep ... Carbon Steel(SPCC, SECC, SPTE, tinplate), # aluminum alloy sheet# red copper, brass, bronze alloyProcess Stamping, deep drawing,metal ... spinning, welding,riveting,CNC Machining, ultrasonic cleaning, sheet metal fabrication, and metal assembly. Surface Treatmentplating (Zinc, ...