Home / Standards / GB/T 2893.4-2013 GB/T 2893.4-2013 Active Graphical symbols - Safety colours and safety signs - Part 4: Colorimetric and photometric properties of safety sign materials 图形符号 安全色和安全标志 第4部分：安全标志材料的色度属性和光度属性 Standard Type GBT ICS 01.080.10 CCS A22 Status 现行 Issue Date 2013-07-19 Implementation 2013-11-30 Responsible Dept 国家标准委 Drafting Unit N/A