Couplers, namely, optical couplers, acoustic couplers, couplers in the nature of data processing equipment; Sleeves for laptops; covers for smartphones; cases for smartphones; protective films adapted for mobile phones; Loudspeakers; Microphones; Headphones; Earphone; Magnetic wires; Materials for electricity mains, namely, power supplies, electrical wires, electrical plugs, electrical sockets; Switches, electric; Electric plugs, sockets and other contacts; Battery chargers