9 [Audio Cassette Tape Recorders;] Blank and Prerecorded Audio Cassette Tapes; [Video Cassette Tape Recorders] ; Blank and Prerecorded Video Cassette Tapes; [Combination Radio/Cassette Recorders;] Electric Vacuum Cleaners for Domestic Use; Electric Flat Irons; Electronic Conference Communication Systems Consisting of Central Control Units, Chairman's Communication Units, Delegates' Communication Units, Secretaries' Communication Units and Parts and Accessories Therefore-Namely, Microphones, Headphones, Loudspeakers, Plug and Sockets, Telephone Couplers and Public Address Couplers; Electronic Simultaneous Interpretation Systems Consisting of Central Control Desks, Chairman's Units, Delegates' Units, Interpreters' Units, Receivers and Transmitters, Amplifiers, and Parts and Accessories Therefore-Namely, Microphones, Headphones, Loudspeakers, Housings, Panels, Modules and Channel Selectors; Video Systems Consisting of Cameras, Electronic Viewfinders, Camera Control Units, Video Mixers, Power Supply Units-Namely, Car Battery Adapters and Powerbelts; Audio Mixers; and Welding Electrodes