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It is well known that,China has the largest consumer groups in the numberof electricity suppliers in the word.Because of this, China has a huge number of courier. “Courier-Ring”is a smart ring which is a specially designed for the courier. “Courier-Ring”can replace the traditionalSteelyard and Bar code scanner，in conjunction with the phone APP ，Couriers make work easier and more efficient
Wuhan University of Technology,