Sheet metal folding machines. 1.Material:iron(SPCC,CECC,SGCC). 2.Process:CNC punching, ... ,Flextronics,Sangfei.5) With advanced equipment of CNC punching machines, CNC bending machines,stamping machine,welding machine,etc. 6) Strict quality control ... or fax.You are highly appreciated. Sheet metal with folding machines