双绞485通信线,双绞线缆

rs-485 rs-485 软芯屏蔽双绞线rs-485
rs485通讯电缆2x05
纯铜国标485信号通讯线rvsp1012141620芯双绞屏蔽线031平方rvsp14x02
485通讯rvsp8 10 12 14 16 20芯0.15 0.2 0.3 0.
国标rs485通讯信号线缆rvsp2/4/6/8芯0.5/0.75/1.