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大對(duì)數(shù)通信電纜HYA 50X2X0。5

HYA 30X2X0。5 HYA大對(duì)數(shù)通信電纜

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RS485專用通信電纜；RS485 2X2X24AWG

RS485專用通信電纜|RS485通信電纜

MHYAV（20 30 50 ）X2X0.8有煤安證

ZRC-HYA阻燃通信電纜