electronic auction - hiring, for a period of 30 (thirty) months, of a company specialized in preventive and corrective maintenance services for elevators, with replacement of parts and components, according to annex i (term of reference). - items 1 - installation / maintenance - elevators, escalators, mount - loads / platform / stairs 2 - installation / maintenance - elevators, escalators, mount - loads / platform / stairs 3 - installation / maintenance - elevators, escalators, mount - loads / platform / stairs 4 - installation / maintenance - elevators, escalators, mount - loads / platform / stairs 5 - installation / maintenance - elevators, escalators, mount - loads / platform / stairs 6 - installation / maintenance - elevators, escalators, mount - loads / platform / stairs