Home / Standards / GB/T 25139-2025 GB/T 25139-2025 Active Ceramic foam filter for foundry 铸造用泡沫陶瓷过滤网 Standard Type GBT ICS 81.060.20 CCS J31 Status 现行 Issue Date 2025-03-28 Implementation 2025-10-01 Responsible Dept 国家标准委 Drafting Unit N/A