家装电线bv和bvr1。bv和bvr线有什么区别？wire bvr和bvr有什么区别？家装电线bv和bvr家装电线bvr家装电线bvr和bvr家装电线BV和bvR，家装中需要很多电线，BV和bvR电线是比较常用的类
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