Unverified90% confidenceDecision RuleTime unknown
焊接烟雾过滤应选HEPA H13级别以上滤芯（对0.3μm颗粒过滤效率≥99.95%），电子焊锡产生的松香烟雾富含超细颗粒物，普通防尘棉无法拦截
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