五类网线规格书 五类网线规格书 MHYV|天津市电缆总厂第一分厂

p1Src=//y3.yzimgs.com/uploads/175499/2018826-14629498.jpg?watermark/2/text/TUhZVnzlpKnmtKXluILnlLXnvIbmgLvljoLnrKzkuIDliIbljoI=/font/5a6L5L2T/fontsize/500/fill/I0E3QTlBOA==/gravity/SouthEast"

aa