Home / Standards / GB/T 25997-2020 GB/T 25997-2020 Active Polyisocyanurate(PIR) products for thermal insulation 绝热用聚异氰脲酸酯制品 Standard Type GBT ICS 91.120.10 CCS Q25 Status 现行 Issue Date 2020-06-02 Implementation 2021-05-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A