... management system manufacture favorable products..briefly description:1. machined part's material:SKD11,SKH51,NAK80, etc2. Precision grinding ... SKH9,SKH51, SKH553)technique standard : according to national standard GM, JIS,DIN,AISI ect, and other national standard to ... mold, precision computer connector mold and other factory automation part etc. with many areas6)production equipment : all machinery ...