Home / Standards / GB/T 21181-2025 GB/T 21181-2025 Active Secondary lead ingots 再生铅锭 Standard Type GBT ICS 77.150.60 CCS H69 Status 现行 Issue Date 2025-08-29 Implementation 2026-03-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A