Home / Standards / GB/T 6405-1994 GB/T 6405-1994 Abolished Types of synthetic diamond and cubic boron nitride 人造金刚石和立方氮化硼 品种 Standard Type GBT ICS 25.100.70 CCS J43 Status 废止 Issue Date 1994-12-20 Implementation 1995-09-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A