Home / Standards / GB/T 39699-2020 GB/T 39699-2020 Active Rubber—Identification of polymers—Pyrolytic gas-chromatographic method using mass-spectrometric detection 橡胶 聚合物的鉴定 裂解气相色谱-质谱法 Standard Type GBT ICS 83.060 CCS G40 Status 现行 Issue Date 2020-12-14 Implementation 2021-11-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A