Preventive and corrective maintenance of elevators, freight elevators and other passenger elevating systems.
Preventive and corrective maintenance of establishments in departments 27 and 61 (14 and 50 if applicable)Preventive and corrective maintenance of establishments in departments 27 and 61 (14 and 50 if applicable).
Preventive and corrective maintenance of establishments in the department 76Preventive and corrective maintenance of establishments in the department 76.