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Corner pieces are used for the assembly of flat doors and windows. When the door, window frame or leaf body is connected by corner pieces, the position of the wings becomes a weak point. Corner pieces are used to increase the strength of the corner joints of the wings, so they are also called strengthening corner pieces. 1、 Strengthen strength,. 2、 Prevent deformation. 3、 Strengthening the robustness of connections to prevent deformation of edges and corners
