... parts processing experience .machine parts Manufacturer, Supplier, Factory, Exporter in chinaStandardJIS AISI DIN Usually packagingPaper of ... technique standard : according to national standard GM, JIS,DIN,AISI ect, and other national standard to making4)technique advantage ... surface roughness within Ra0.025, straightness within 0.0028)packaging type : Paper of Box9)cooperation customer : China, ...