Home / Standards / GB/T 44539-2024 GB/T 44539-2024 Active Technical specification for fluorspar 萤石技术规范 Standard Type GBT ICS 73.080 CCS Q69 Status 现行 Issue Date 2024-09-29 Implementation 2025-04-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A