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DropUSB is a revolution USB which can project user's USB files on the wall and convey to another user's USB by Bluetooth without any intermediary such as computers or laptops. It is much more convenient and save time for busy office people. The way which DropUSB recharge batteries is to use computer or electric power source rather than batteries. It's much more environmental friendly.
Chen, Chia-Yu
Taipei City, Taiwan
Chia-Yu Chen,
Chen, Chia-Yu