Home / Standards / YS/T 428-2000 YS/T 428-2000 Abolished 五氧化二铌 Standard Type YS ICS N/A CCS N/A Status Abolished Issue Date 2000-03-29 Implementation 2000-10-01 Centralized Committee 国家有色金属工业局 Issuing Authority 国家有色金属工业局