现今国内经济高速发展，电动伸缩门企业如“雨后春笋”般增加，消费者的选择日益丰富，催生出了消费者对于电动伸缩门质量更高的追求。消费者眼光的增高，粗制滥造的电动伸缩门品只会被消费者抛弃，要想消费者认可你的品牌实力，就必须生产更高质量的产品。电动伸缩门的基本组件是导轨、滑轮及传动皮带。
Nowadays, with the rapid development of domestic economy, the number of enterprises of electric telescopic doors is increasing like "bamboo shoots after rain". Consumers'choices are becoming more and more abundant, which leads to consumers' pursuit of higher quality of electric telescopic doors. With the increase of consumer's vision, crude and fabricated electric telescopic products will only be abandoned by consumers. If consumers want to recognize your brand strength, they must produce higher quality products. The basic components of electric telescopic door are guide rail, pulley and transmission belt.
由于这三个部分与电动伸缩门的运行直接有关，是电动伸缩门正常使用条件下的易损件，其结构设计、材质、加工精度、安装和调节精度决定了其维修保养要求和使用寿命。
Because these three parts are directly related to the operation of the electric telescopic door, and are vulnerable parts under the normal use conditions of the electric telescopic door, its structural design, material quality, processing accuracy, installation and adjustment accuracy determine its maintenance requirements and service life.