Home / Standards / GB/T 39744-2021 GB/T 39744-2021 Active General requirements of mechanical product electronic manual based on three-dimensional model 基于三维模型的机械产品电子手册编制通用要求 Standard Type GBT ICS 01.100.01 CCS J04 Status 现行 Issue Date 2021-03-09 Implementation 2021-10-01 Responsible Dept 国家标准委 Drafting Unit N/A