Air filters for mechanical purposes; Brushes for vacuum cleaners; Dust filters and bags for vacuum cleaners; Filters and purifiers for machines, namely, filters and purifiers for removing contaminants from gases used in the semiconductor industry; Filters for cleaning cooling air, for engines; Hand-held vacuum cleaners; Internal combustion engine parts, namely, particulate filters; Vacuum cleaner attachments for disseminating perfumes and disinfectants; Vacuum cleaner bags