Home / Standards / GB/T 39955-2021 GB/T 39955-2021 Active Additive manufacturing—Materials—Powders of Nylon 12 and its composites for powder bed fusion 增材制造 材料 粉末床熔融用尼龙12及其复合粉末 Standard Type GBT ICS 25.030 CCS G32 Status 现行 Issue Date 2021-03-09 Implementation 2021-10-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A