【正文】
The four process of automobile production 汽車生產(chǎn)四大工藝 Cao Yuhui Class 3 process沖壓工藝 5400t Stamping machine in Stamping Workshop. process沖壓工藝 mold for metal sheet process沖壓工藝 finished metal sheet process沖壓工藝 finished metal sheet Welding process焊裝工藝 Welding robot weld the body process焊裝工藝 a worker welding