Based on the advantage of former keel stairs,this stairs adopt new extrusion craftwork;and the structure of the stairs are more firm and safe.This product has been awarded many national patents.
Based on the advantage of former keel stairs,this stairs adopt new extrusion craftwork;and the structure of the stairs are more firm and safe.This product has been awarded many national patents.
该楼梯在保持原有龙骨楼梯优点的基础上，采用了新的挤压枝术工艺，使楼梯的结构更加的坚固、安全，该产品曾荣获多项国家专利。