N99 high filter efficiency dust mask 1. NIOSH N99 dust mask, TC No: 84A-8146 2. High filter efficiency: at least 99% efficiency for oil-free particulates Pack of 10 pieces per box, lightweight respirator mask, easy to breathe; free indoor and outdoor maintenance; recommended to keep in the...
High filter efficiency: at least 99% efficiency for oil-free particulates the so-called civil anti haze masks on http://www.fupinghealthcare.com/n99-mask/
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