Home / Standards / GB/T 23453-2025 GB/T 23453-2025 Active Natural limestone slab for building 天然石灰石建筑板材 Standard Type GBT ICS 91.100.15 CCS Q21 Status 现行 Issue Date 2025-04-25 Implementation 2025-11-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A