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V-bag is a design of garbage bag with a V-shaped cutline on top and bottom. On top, the V-shaped mouth is easier to tie up. In the bottom, V-shaped design can make full use of the bottom space. Thus, save the use of plastic material.
Its only a small change of cutline, but it can make a difference in saving material and make full use of what you have got.
Rong Li; Junjie Peng; Jiaxi wang