Unverified85% confidenceFactTime unknown
带磁性的黑板贴通常是铁质基材+涂层，整体厚度约0.4-0.8mm且较重，需要更强背胶或另配挂钉，普通PVC黑板贴不具备吸磁功能
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85%
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Long-term
Relevance
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