Home / Standards / GB/T 30431-2020 GB/T 30431-2020 Active Gas chromatography for laboratory 实验室气相色谱仪 Standard Type GBT ICS 17.180.99 CCS N52 Status 现行 Issue Date 2020-06-02 Implementation 2021-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A