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In our family,May be you realize the differences of child and adult’s sizes，they need the different volumes of water in the container. So the little child must waste some water.
It is a product combing amusement with water-saving. It consists of the floating plastic rubber material and the sucker of the bottom.On the one hand, when you want to bath, some parts of the bathtub can be fixed, and take up some room to save water. On the other hand, when the baby wants to bath, you can rid of the sucker on the bottom, it can float in the water, and all of the kids will like it to play. And it has no effect on the adult when removing the stuck.
Beijing University of Technology