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There are cup holders mounted on buses for people to place. Those cup holders are made to allow only one size that is specific. Various Containers such as Glass bottles, Cans, and PET do not fit in. This new device is designed to embrace different sizes of containers which has controllable mechanism and that system allows users to manipulate the holder to mount any types of drink container easily.
Songpa-gu, Seoul, South Korea
jae moon Lee,