Unverified80% confidenceDecision RuleTime unknown
空腔/夹层部位（如车门内、纵梁内）是锈蚀高发但外观看不到的位置，应选择喷出后能爬行渗透并流平的低黏度蜡基产品，而非高黏度厚膜产品（喷不进去也覆盖不均）
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80%
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Long-term
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