Top ten brands of elevators and top ten cottage brands?

Do you know that you are talking about domestic elevators? They all sell dog meat. Do you know that Thyssen used to use a domestic Xinshida motherboard? Do you know how to get a good elevator? I didn't know I was a big head and still advertised to others here. To tell the truth, good elevators are installed by installers whose lives are worse than beggars. Without our efforts, the best elevators in the world are rubbish.