The sale, repair, servicing, and maintenance of rotating industrial equipment, such as, reciprocating compressors, centrifugal compressors (including screw, sliding vane, and axial types, as well as fans and blowers), turboexpanders, reciprocating pumps, centrifugal pumps, steam turbines, gas turbines, non-automotive gearboxes, industrial and stationary engines, electric motors, generators, conveyor systems, rotating drums, mixers, agitators, shakers and sizers, and vessels and exchangers.