NIL "EFTTOM" at the Technical University of Sofia performs the following complex engineering activities: Research the possibility and expedience for applying the "ion nitriding" method for specific users; Manufacture, assembly and put into operation of installations for nitriding in (DC or pulsed) glow discharge of rated power values 20, 50, 100 and 200 kVA; Implementation of technologies for ion nitriding and carbonitriding of details and tools; Guarantee and post-guarantee maintenance of installations; Repair and modernization of existing installations; Services for ion nitriding or carbonitriding of a wide range of details and tools of various size. NIL "EFTTOM" performs the activities listed above in high quality, in short terms and at competitive prices.