Home / Standards / GB/T 30807-2025 GB/T 30807-2025 Active Thermal insulating products for building applications—Determination of long-term water absorption by immersion 建筑用绝热制品 浸泡法测定长期吸水性 Standard Type GBT ICS 91.120.10 CCS Q 25 Status 现行 Issue Date 2025-06-30 Implementation 2026-01-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A