Different styles of semi-automatic door guide rail composition is also different, everyone in the choice and purchase need to first understand this aspect of information, in order to make the most accurate decision. For example, the common fixed type, mainly through the two-layer guide rail and fixed support, that is, to support the foot to make up. If the product can be mobile, the composition of the part is a two-layer guide rail, plus a tilting frame, can play a mobile role is the function of the support. That is to say, the most important difference between the two styles, is the support, the guide rail is actually the same, we can understand the focus of their own selection when the purchase. In the selection, we have determined a few basic elements of semi-automatic door guide, such as brand, size and so on, and then we can focus on the other part of the hope of what functions. This allows you to choose between several different styles.