iso 7573 1983 pdf chinesestandard.net chinese standard: gb/t, gbt, gb. industry standard: yy;yy/t;qc;qc/t;hj;hj/t;fz;fz/t;nb;nb/t;jjg;jjf;tb;tb/t;jb;jb/t;hg;qb;sn;sh;cj;yd;ny;jg;yb;ys;sj;sy;gy;yc Category:consumer electronics Global Rank:561,381 visits:84.5K pages/Per:1.7 evs.ee Category:business services Global Rank:749,739 visits:32.2K pages/Per:7.2 ADS