... quality control. Production specification can produce according to customer's drawings or sample 1.46 years of experience in ... Equipment: 25-400ton punching machine, CNC machining, milling, turning, lathe cutting, planning machine, heat treatment machine, varnish baking7. Finish: ... line, cold punching line. More than 1600 advanced machines for punching, turing, milling, maching, weld, galvanizing, heat ...