usage: patent products for textile machine long service life and high rigidity high quality ... 4. OEM service is welcomed.5. Material: cold rolled steel,stainless steel,galvanized steel,copper ,brass.6. Equipment: 25-400ton punching machine, ... development, assembly line, cold punching line. More than 1600 advanced machines for punching, turing, milling, maching, weld, galvanizing, heat treatment and ...