Professional escalators Has installed a patent recommendation system back home for easier work Nilfisk 550D DUPLEX has a special brush that can be cleaned in the depths of the escalator, effectively absorbing dust and debris. The use of escalators for polishing operations with abrasive brushes is a task that requires high security and high security. The drug acts in conjunction with the brush to dissolve the dirt, grease and remaining dirt, including what is wrapped in the groove. The process of cleaning dirt and residue completely has been restored to the original shine with the powerful centrifugal action of the machine’s duplex brush. Upon completion of the cleaning process, facilities and maintenance will help you save the cost of maintenance and maintenance of Nilfisk 550D DUPLEX.