RVV4*1电缆是什么线 RVV4*1电缆是... 天联电缆网

p1Src=//y1.yzimgs.com/uploads/303765/2018815-145829565.jpg?watermark/2/text/5aSp6IGU55S157yG572R/font/5a6L5L2T/fontsize/650/fill/I0E3QTlBOA==/gravity/SouthEast"

aa