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Cigarette butts can be recycled and reuse. However, most people do not know that and often
discarded the butts everywhere. BUTTS KEEPER can give you some feedback if you collect and
recycle the butts.The homeless is the poorest groups in the city, most of them have no work and
income, but they are familiar with urban corner. It will be a new approach for them to obtain
income and promote environmental protection at the same time. Not just for the homeless,
everyone can use it. In addition, we can also donate the amount to people in need.
National Taipei University of Technology