Can Ren Tengda's seat elevator be used on the fifth floor?

The fifth floor is fine. At present, Shi Tengda has installed no less than 200 sets of 6.7-storey buildings in the renovation of old residential areas in China. In the China market, Shidengda's share is the first.

However, due to the slow running speed of the chair elevator, combined with the design factors of the track, we can only reach the seventh floor at most.

Of course, I don't know if the landlord asked if he was an official. Hehe, is it wrong to write the official as Ren Tengda?