单模光缆GYTA-8B1国标 天联电缆网

p1Src=//y3.yzimgs.com/uploads/303765/20191024-74321771.jpg?watermark/2/text/5aSp6IGU55S157yG572R/font/5a6L5L2T/fontsize/400/fill/I0E3QTlBOA==/gravity/SouthEast"

aa