Home / Standards / GB/T 39469-2020 GB/T 39469-2020 Active Classification and coding method of general manufacturing process knowledge 通用制造工艺知识分类及编码方法 Standard Type GBT ICS 35.240.50 CCS J07 Status 现行 Issue Date 2020-11-19 Implementation 2021-06-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A