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3 48芯96芯144芯288芯光缆架空管道
海安层绞式直埋光缆gyty53光缆48芯24芯光缆足米足量
室内多模万兆光缆om3 om4阻燃低烟无卤束状软光缆4 6 8 12 24 48芯
采购2022夏兰州出售皮线光缆gyta12芯24芯36芯48芯gyts4芯68芯光纤线
adss光缆全介质自承式adss24芯光缆双护套12芯48芯电力光缆厂家