| Image |  |
| Category | Bicycles |
| Title of Entry | Quadrilateral |
| Country | China |
| Designer | Li Yin |
| Description | Quadrilateral has a new folding structure with less welding points than the other folding bikes; the various parts of the frame use hinge connections with bearings that allow for quick folding and unfolding.
Those folding bike is for two groups of people: those who have cars can ride the bike between their parking spot and destinations; those who use public transportation to go to work can ride between the transportation stops and their places of employment. |