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You might miss an important call, when you swim or ten your skin at the beach, because of out of the battery.
In these days, an electric device is with you during 24 hours. It means that the electric device is the essential thing for your life.
Even if you are out of your home, it may still be with you.
How do you use an electric good outside?
Solar-Tree helps charge your electric devices by saving electric power form the sun.
Seoul National Univ. of Technology
Industrial design
Seoul, South Korea
Young Yoon, Kim
Kim, Jun-Se
seoul, South Korea
Min-Goo, KIM
Dong-Eon, KIM