Installation of electric machines, apparatus and instruments; electric construction; construction and civil engineering works relating to telecommunication installations; repair and maintenance of optical fiber and optical fiber cables; repair of telephone sets; repair and maintenance of computer hardware; repair and maintenance of generators; repair and maintenance of electric motors; repair and maintenance of packaging and wrapping machines

systems for the construction, testing, monitoring and maintenance of optical fiber telecommunication networks consisting of a personal computer, telecommunication terminals, a device for measuring electrical signals, optical fiber and a transmitter; computer software for use in the testing, monitoring and maintenance of telecommunication networks

Computer consultation; computer programming for others; maintenance of computer software; rental of computers