Home / Standards / GB/T 23452-2025 GB/T 23452-2025 Active Natural sandstone slab for building 天然砂岩建筑板材 Standard Type GBT ICS 91.100.15 CCS Q21 Status 现行 Issue Date 2025-08-29 Implementation 2026-03-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A