Electrical cables and cutting for electrical cables; fiber-optical cables; cables and conduits for data transmission, namely, modem cables, network cables, Ethernet cables, and plastic conduits for electrical use; network cables and lines, namely, optical cables, electronic cables; electrical ducts and cables for electrical and optical transmission, including other media, namely, optical cables; finished or semi-finished cables or ducts included in this class, namely, electrical ducts and electronic cables; electricity connector elements for cables and ducts and parts thereof, particularly electrical plugs and plug electrical connectors and electric plugs, cable connectors; accessories for connector elements for cables and ducts included in this class, namely, electric pins, electric casings; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, current converters, capacitors; connectors for electrical and optical lines, namely, electrical connectors and fiber optical connectors; electric bus bars; cable sheaths for electric and optical ducts; screw threads for cables and ducts included in this class, namely, electrical cable and electrical duct parts; accessories for screw threads for cables and ducts included in this class, namely, cable gland; recording apparatus for optical signals; optoelectronic apparatus, namely, digital signal processors; measuring apparatus for measuring electrical signals; data processing apparatus; data transmission apparatus; data storage devices, namely, blank hard drives for computers; computer printers, computer peripherals for the production of labels; apparatus for using communication networks, particularly measures, analyzers, terminals for networks, network counters, terminal servers, computers for network management, distributors, y-branches, multiplexers, modems, transceivers, repeaters, gateways; routers for computer networks; switches for computer networks; platforms for computer networks, namely, computer software platforms for database management; computer software for the creation of firewalls; computer cabinets specially adapted to house computer network servers and related computer equipment; mounting racks for computer hardware; accessories for the aforesaid items and network elements, included in this class, namely, mounting racks for computer hardware; computer programs for word processing; computer software for network management for industrial networks; personalized package software for word processing; software for marking labels; computer programs recorded on data media for database management; drive chains and power chains of plastic for the protection of moving cables, in the nature of plastic conduits for electrical use