What exactly does an elevator maintenance man do?

Office clerks, all kinds of paperwork, recording working hours, recording systems, and sorting out various reports. Maintenance staff spend most of their time on the construction site and on their way to the construction site, so many documents that need to be submitted need the support of clerks to sort out and submit, um, various application forms and documents. Anyway, it's all kinds of paperwork ~ ~ ~ It's not very hard, but it's not very easy, and the amount and salary are not very high.