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This is a design for an ash-bin which can use space well by compressing garbage.The bin body is collapsible by the fold structure.The use of the Armstrong Bin requires just two steps: (a) put down the lid:(b) tread in .The garbage is compressed and the bin body automatically restores itself after deformation.The highlight of the design is that the capacity of one Armstrong Bin is equal to three ordinary ash-bins and it is also extremely easy to us.