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When using shampoo, it is difficult to control the amount of shampoo.Therefore, the cleaning effect is difficult to ensure, resulting in unnecessary waste.The Liquid Controller which i have designed can solve the problem by the way of shaking to remind.In the pressing process,it will remind the user of amount of shampoo, and help the user to control the amount of liquid by times of shaking. Play a active role in the process of using. Avoid the blind use and save liquid consumption.