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Have you ever noticed that when we are brushing teeth, we usually squeeze a lot of toothpaste, but only a little bit of it is actually used. However, the toothpaste with a trapezoidal caliber ,which is well fitted the toothbrush width , changes the amuont as well as the shape of the extruded toothpaste. This improvement is not affect brushing teeth, and triple the usage time of the toothpaste. What’s more, toothpaste with the special design will not increase costs, suitable for mass production and daily life, and environmental-friendly.
Chongqing Technology and Business University