Precautions for buying retractable doors:
购买伸缩门的注意事项：
First of all, if the telescopic door is in the form of a translation door, the opening side reserves twice the distance of the door body to ensure that the door body is fully opened.
首先，如果伸缩门为平移门形式，开门方预留两倍于门体的距离，以保证门体完全开启。
Secondly, the telescopic door is installed in the middle of the door or the internal measurement.
其次，伸缩门安装在门洞中间或内部测量处。
However, it is generally habitually fixed in the internal measurement within a space of 6 meters, so that the door body of the telescopic door can be freely contracted, so as to ensure that the door will not shrink, and large and small vehicles can freely enter.
但是，一般习惯性地固定在6米空间内的内部测量中，使伸缩门的门体可以自由收缩，从而保证门不会缩小，大、小型车辆可以自由进入。
If the door is larger than 6 meters, this factor can be ignored, but if it is fixed on the inside, the size of the ordered door body is the size of the door plus the size of the door body after shrinking.
如果门洞大于6米，可以不考虑这个因素，但是如果是固定在内侧，订购的门体尺寸是门洞尺寸加上门体尺寸之后收缩。
Third, the swinging folding telescopic door is not restricted.
第三，摆动折叠伸缩门不受限制。
Proper maintenance of the electric retractable door can extend the service life.
正确保养电动伸缩门可以延长使用寿命。
Many customers reflect that the failure of the electric retractable door leads to doubts about the quality of the product!
很多客户反映电动伸缩门的故障导致对产品质量产生怀疑！
As long as we understand the product, we can use the product and extend its use time.
只要我们了解产品，就可以地使用产品，延长其使用时间。
The electric retractable door has a wide range of applications and is welcomed by the majority of users and consumers.
电动伸缩门应用范围广泛，深受广大用户和消费者的欢迎。
The electric retractable door can not only manage and maintain the access control of personnel and motor vehicles, but also ensure the safety of property in the area.
电动伸缩门不仅可以管理和维护人员和机动车的出入控制，还可以保证区域内的财产安全。
It is a category of products commonly used by factories, communities, schools and other regional gates.
是工厂、社区、学校等区域大门常使用的门类产品。
Most common electric retractable doors are made of stainless steel or aluminum alloy.
常见的电动伸缩门多为不锈钢或铝合金材质。
