门排主框、副框、斜管采用特有的截面设计，使其结构能够错位重叠，门体收拢后缩位小，伸缩比:10:1.7（包机头）。门体采用三种规格走轮，且两种门排轮采用错位搭配，收拢后重叠，占位空间小，轮毂采用三角形设计，高雅大气。 The door body adopts three specifications of walking wheels, and the two kinds of door row wheels are misaligned and overlapped after being folded. The space is small. The wheel hub adopts a triangular design and is elegant and atmospheric.
