Home / Standards / JB/T 8249.4-1999 JB/T 8249.4-1999 Abolished 照相机 附件插座及插座芯 Standard Type JB ICS N/A CCS N/A Status Abolished Issue Date 1999-08-06 Implementation 2000-01-01 Centralized Committee 国家机械工业局 Issuing Authority 国家机械工业局