Superseded85% confidenceFactTime unknown
三聚氰胺海绵（魔力擦）靠微观磨料磨削去污，属于消耗品，每次使用会自身磨损变小，反复搓洗约3-5次即报废，且会哑光化亮面塑料和钢琴烤漆
1
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85%
Confidence
Long-term
Relevance
-
First Seen
This knowledge claim has been superseded by newer content
魔力擦本质是三聚氰胺泡棉，靠微观硬度像超细砂纸一样物理打磨去污，密度越高（手感越硬实）耐磨次数越多，低密度松软款擦几下就掉渣缩小Sources
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