继北京地铁扶梯事故之后,近期国内各地电梯安全事故频发。人们不禁要问:究竟还有多少电梯存在安全隐患?电梯是公共服务产品,其安全性直接关系到广大人 Following the Beijing subway escalator accident, safety accidents have frequently occurred in elevators throughout the country. People can not help but ask: How many elevators do there exist security risks? Elevators are public service products and their safety is directly related to the majority of people.