Home / Standards / GB/T 30918-2022 GB/T 30918-2022 Active Non-oil-extended solution polymerized isoprene rubber (IR)—Evaluation procedures 非充油溶液聚合型异戊二烯橡胶(IR) 评价方法 Standard Type GBT ICS 83.060 CCS G35 Status 现行 Issue Date 2022-12-30 Implementation 2023-07-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A