30对市话电缆HYA30*2*0.5是几芯电缆 天津市电缆总厂第一分厂

p1Src=//y1.yzimgs.com/uploads/354583/201942-04134394.jpg?watermark/2/text/5aSp5rSl5biC55S157yG5oC75Y6C56ys5LiA5YiG5Y6C/font/5a6L5L2T/fontsize/750/fill/I0E3QTlBOA==/gravity/SouthEast