For purchasing elevators, the first thing we need to do is to investigate the elevator's grade. Here are the tips about it as follows:
1. The manufacturer must be an enterprise specializing in the production of elevators . In general, the registered capital of a qualified elevator manufacturer in China shall not be less than 100 million Yuan RMB.
2. The main parts of the elevator shall have implied the leading technology , such as the traction machines of the observation elevators or passenger elevators are permanent magnet synchronous; The elevator's car door adopts variable voltage and variable frequency control technology and photocell protection . The elevator's safety parts such as safety gear , governor and buffer must be produced by professional manufacturers.