[KongchangAI]
Unverified90% confidenceDecision RuleTime unknown

认准防护等级认证标识而非'防辐射'字样:N95(美国NIOSH)、KN95(中国GB2626)、FFP2/FFP3(欧盟EN149)是有效颗粒物过滤认证;GB19083是医用防护口罩标准(含合成血穿透测试);无任何标准编号的'防辐射口罩'多为智商税

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