This price is based on the number of elevator floors, elevator brand, model and function. The more functions, the higher the price. There are three maintenance methods in the maintenance contract. Method A includes the maintenance and replacement of all elevator parts, but the price is higher, several thousand yuan per month. Mode b; Including wearing parts, common lubricating oil and so on, that is to say, if there are no major failures or bad things, there is no need to buy spare parts. About 500 dollars a month. Mode C: Only maintenance service is provided, and all spare parts are purchased by users themselves. Prices generally range from 300 yuan to 400 yuan.