Home / Standards / GB/T 2881-2023 GB/T 2881-2023 Active Silicon metal 工业硅 Standard Type GBT ICS 77.150.99 CCS H 61 Status 现行 Issue Date 2023-12-28 Implementation 2024-07-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A