当公司注意到这种电动伸缩门的作用时候，它可以采用电动门来取代自己的铁制品的大门。
When the company notices the function of the electric telescopic door, it can use the electric door to replace its own iron door.
因为当这种伸缩门没有生产出来的时候，许多企业都是使用的铁制大门，这种大门往往都是人工的进行开启还有闭合大门，而且在长时间的使用的时候，会出现生锈的现象，久而久之则会导致推拉阻滞，不顺畅等情况。
Because when this kind of telescopic door is not produced, many enterprises are using iron gates. These gates are often opened and closed manually. Moreover, when used for a long time, there will be rust. Over time, it will lead to push-pull blockade and unsmooth situation.