Home / Standards / GB/T 31968-2025 GB/T 31968-2025 Active Rare earth composite yttrium zirconium oxide ceramic powder 稀土复合钇锆陶瓷粉 Standard Type GBT ICS 77.120.99 CCS H65 Status 现行 Issue Date 2025-03-28 Implementation 2025-10-01 Responsible Dept 国家标准委 Drafting Unit N/A