Complex sentence: It is managed and run by N.E. National Engineers, a well known firm and contractors deals in Computer networks working in collaboration with Wateen Telecom, an Abu Dubai-based company providing Networking solutions.
Split into simpler sentences: It is managed and run by N.E. National Engineers, a well known firm of contractors dealing in computer networks. They work in collaboration with Wateen Telecom, an Abu Dubai-based company providing Networking solutions.