Home / Standards / GB/T 46779-2025 GB/T 46779-2025 Upcoming Fine ceramics—Testing method for macro-heterogeneity in microstructure 精细陶瓷 微观结构中的低倍组织缺陷测试方法 Standard Type GBT ICS 81.060.30 CCS Q 30 Status 即将实施 Issue Date 2025-12-02 Implementation 2026-07-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A