Home / Standards / GB/T 29253-2012 GB/T 29253-2012 Active Major graphical symbols for laboratory instruments and equipment 实验室仪器和设备常用图形符号 Standard Type GBT ICS 01.080.20 CCS N60 Status 现行 Issue Date 2012-12-31 Implementation 2013-06-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A