Home / Standards / GB/T 39903-2021 GB/T 39903-2021 Active Work breakdown structures for project and programme management 项目工作分解结构 Standard Type GBT ICS 03.100.40 CCS A02 Status 现行 Issue Date 2021-03-09 Implementation 2021-10-01 Responsible Dept 国家标准委 Drafting Unit N/A