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The outer layer of ordinary diapers is a kind of waterproof outer. Parents can not find out whether the child had urinary immediately, unless they open and check it every once in a while. It is not good both for the parents and the baby's health.The outer layer of visual diaper is made of discoloration material. it can show special color as soon as the kid pee.
Han Like, Liu Peng, Ren Ming, Wei Chengjie