Software programs, operating systems, user programs, data storage and retrieval systems, data communication and transmission systems and local area network (LAN), wide area network (WAN) and Internet (global computer communication network) programs; optical, magnetic and magneto-optical data carriers, such as diskettes, cassettes and cartridges, magnetic tapes, compact discs, magneto-optical and optical discs

After-sales sevice in the field of computer equipment; computer, computer parts and accessories repair; system and computer network installation and maintenance