Revision as a word means the process that is done to enhance the elevator. Revision can be needed at the elevators in buildings because of multiple reasons.
Revision can become a must because of either the need to change the elevator’s end-of-life parts or as a result of legal labeling inspection. To get the green label for your elevator and  improving the level of security and comfort so that they meet the requirements written on the most recent elevator regulations. , a series of revisions needs to be done.
Because of this, the facility needs to be updated to keep the quality of all parts on the desired level and to avoid buildings to lose price. With the help of elevator revision; increasing safety standarts provides safer usage, releasing new products provides an esthetic look. Makes the elevator run comfortably, save a lot of energy.