... light weight 3>Certificate:ISO9001:2008 Air Purifier Cartridge HEPA Filter Production Description:1) Frames: Paper,Aluminum or galvanized frame2) ... dust mites, and other allergens4.ISO, SGS approvalHepa air filter Application:1)air HFPA purifier, air cleaner, vacuum cleaner ... ,etc.2)FFU, electronics, semiconductor, hospital and food industry2)Medical nano ...