maintenance of fire protection installations and equipment (Grouping of orders

maintenance of fire extinguishers, dry columns, sprinklers, ria, baes and washing devices (city)

maintenance of fire doors, fire alarms, and smoke extraction systems (city)

maintenance of fire extinguishers, dry columns, sprinklers, ria, baes and washing equipment (ccas)

maintenance of fire doors, fire alarms, and smoke extraction systems (ccas)