Home / Standards / GB/T 41923.4-2022 GB/T 41923.4-2022 Active Three-dimensional process planning for mechanical products—Part 4：Process symbol and annotation 机械产品三维工艺设计 第4部分：工艺符号与标注 Standard Type GBT ICS 01.100.01 CCS J04 Status 现行 Issue Date 2022-03-09 Implementation 2022-10-01 Responsible Dept 国家标准委 Drafting Unit N/A