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议价SIEMENS西门子PLC模块S7-200SMART 6ES7288-1SR20/ST20/SR3￥
（设备配件）S7-200 Smart 3套CPU SR20 EM DR0
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【议价】PLC S7-200SMART SR20ST20SR3
议价商品西门子PLC S7-200SMART SR20ST20SR3
