Based on your company's elevator budget and scope of application, if the elevator requirements are relatively high and the budget is sufficient, contact some big elevator brand companies, like Mitsubishi, OTIS, Tongli, Thyssen, Hitachi 。。。。. Among these brands, Tianjin OTIS has the best quality and the best service, but the price is relatively high. You can ask them for a quote, ask for samples and information to be mailed, or if it's more complete or more trouble, make a tender document and send it to each company.
Local maintenance is very important, the elevator equipment itself is not prone to failure, mainly in the later maintenance work, so try to find a local company to do.
Local maintenance is very important.