Home / Standards / GB/T 17712-1999 GB/T 17712-1999 Abolished Duplicator and document copying machines--Symbols 速印机和文件复印机 图形符号 Standard Type GBT ICS 01.080.20 CCS A22 Status 废止 Issue Date 1999-03-23 Implementation 1999-10-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A