I did a little bit research and found the escalator is from Otis. Of course there are management and maintenance issues, but it is not related to the product qu

I did a little bit research and found the escalator is from Otis. Of course there are management and maintenance issues, but it is not related to the product quality Chinese-branded plane. And if you are buying cheap product or using a cheap service, don't expect it to be the same quality as the expensive counter parts.