... light weight 3>Certificate:ISO9001:2008 Air Purifier Cartridge HEPA Filter Production Description:1) Frames: Paper, ... air filter Application:1)air HFPA purifier, air cleaner, vacuum cleaner,etc.2)FFU, electronics, semiconductor, hospital and food industry2)Medical nano silver masks ... , exposure suits, hygiene necessitiesHepa filtersHepa air filters are the most ...