Home / Standards / GB/T 40720-2021 GB/T 40720-2021 Active Rubber,vulcanized rubber—Determination of insulation resistance 硫化橡胶 绝缘电阻的测定 Standard Type GBT ICS 83.060 CCS G40 Status 现行 Issue Date 2021-10-11 Implementation 2022-05-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A