Installation, maintenance and repairing of apparatus and constructions in the field of ventilation systems engineering, control systems engineering, and electric drive vehicle engineering, in particular for fans, ventilation apparatus, motors, electric motors and electric drive motors

Electric drive motors for lifts and elevators; electric submersible pump motors for hydraulic lifts and elevators; fans for motors and engines with and without drive motors; fans for motors and engines with and without housings

ELECTRONICALLY COMMUTATED CONTROL DEVICES FOR MONITORING AND CONTROLLING ELEVATORS, VENTILATING FANS, ELECTRIC MOTORS, ELECTRONIC VOLTAGE, MOTOR PROTECTION, TEMPERATURE, PRESSURE, AIR SPEED AND FOR ACTUAL VALVE DISPLAY; AND SPEED CONTROLLERS FOR VENTILATING FANS AND ELECTRIC MOTORS