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家装电线选购指南:万瑞通工程师教你四步识破劣质线缆,避开陷阱 ...
1. 观其形:优质线缆绝缘层厚薄均匀,表面印有清晰的品牌、规格及3C认证标识。劣质产品常存在油墨模糊、绝缘层厚度不均甚至偏心等问题,用手搓揉易褪色。
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