1

One

采用较高档次表面处理如氟碳喷涂、电泳工艺的铝材，能够多年有效承受风吹日晒高温严寒的考验，并且能够在一定程度上防止环境侵蚀。

The high grade aluminum surface treatment such as fluorocarbon coating, electrophoresis process, can effectively withstand high temperature for many years exposed to the weather cold test, and can prevent environmental erosion in a certain extent.

2

Two

要定期经常的检查机箱内部杂物，如有杂物，要尽快取出。

It is necessary to check the inside of the chassis regularly and regularly, if there is any sundries, take out as soon as possible.

3

Three

平时雨雪或刮大风后要擦拭门片，清除表面的水分和灰尘。

After rain or snow or wind, wipe the door, remove water and dust on the surface.

4

Four

地面污水垃圾要每天打扫，保证线路安全，可以有效保护延长伸缩门寿命。

The ground sewage garbage should be cleaned every day to ensure the safety of the line, and the life of the expansion door can be effectively protected.