Home / Standards / GB/T 674-2024 GB/T 674-2024 Active Chemical reagent—Cupric oxide powder 化学试剂 粉状氧化铜 Standard Type GBT ICS 71.040.30 CCS G62 Status 现行 Issue Date 2024-09-29 Implementation 2025-04-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A