Unverified85% confidenceDecision RuleTime unknown
门板填充物比钢板厚度更影响性能：优质防盗门内填岩棉或蜂窝纸板，岩棉具备防火隔音功能，劣质门内部为空心或发泡塑料，敲击声音空洞
1
Sources
85%
Confidence
Long-term
Relevance
-
First Seen
Sources
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