Unverified80% confidenceFactTime unknown
复古白色橡胶大底和中底会自然氧化发黄，轻度发黄用紫外线还原（如晒背+过氧化氢法）可改善，但整体硫化发黄发脆则不可逆
1
Sources
80%
Confidence
Long-term
Relevance
-
First Seen
Sources
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