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Since pigment usually adopts aluminum tube packing, it is difficult to use the pigment completely by squashing with the hand， resulting in waste. This new blade we increase a groover at the bottom which just fits the tail end of the aluminum tube packing, with the handle own column, by rolling the pigment can be totally extruded from aluminum tube, to make the best use of pigment. What a simple changes can effectively avoid the waste of paint!
Xiaowei Wu，Caixiang Ding，Rufeng Dai，Ziyun Yan，Dunqi Lu，Wenjie Zhang，Dawei Pan，Huanghao Jin，Qionglei Zhu