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Recently, The bicycles are used by lots of people because its meaning has changed green transportation.
However, they are still concerned about the safety & security, so wed like to suggest the bicycles which can solve those problems for all the users.
Therefore, the user can prepare for emergency quickly & check that situation in advance through Self-sufficiency bike for themselves. Also, they can strengthen security of their bicycle since Self -sufficiency bike is designed to union of bicycle pump & lock.
Jo Chi Won, South Korea
Sihyun / Park
Jochiwon, South Korea
Dong Hyuk / Kang