Unverified83% confidenceDecision RuleTime unknown
选购时用‘单张克重’而非‘每卷张数’判断实惠程度，克重（g/m²）越高纸越厚实，同价位下张数多但克重低（<40g/m²）往往一擦即破，反而更费
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83%
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Long-term
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Unverified克重越高纸越厚实但同价下卷数越少，日常擦拭130-140g/卷已足够，一味追求高克重反而不经济84% similarUnverified层数并非越多越好：4层纸看似厚实，但若单层克重低则整体仍偏薄且成本转嫁到营销，日常擦拭3层13g/㎡已足够，过度追求层数不划算83% similarUnverified标注卷长常有虚标，真实米数=毛重减去纸管重后按胶带克重估算；低价胶带常以缩短卷长（如标100米实为50米）降低成本，按每米单价而非每卷价对比更准80% similarUnverified纸越厚越吸水但也越费、单张成本越高；日常擦手擦嘴3层足够，追求极致柔厚的4层产品单价高约30-50%但实用差异不大78% similarUnverified性价比核算应看单张有效面积×张数除以价格，而非仅看张数；同价下大尺寸厚款单次清扫面积大、更换频率低，实际使用寿命常优于张数多但尺寸小的薄款78% similar
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