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When people use creams or cosmetics,the mouthpiece portion always in contact with air and many bacteria will breed ,so that people ‘s skin or wound is infected, causing great health risks.Copper can kill superbugs like MRSA in 30 minutes and bacteria can not produce antibodies that other materials do not have the advantage ，copper can greatly reduce the growth of bacteria, sealed with a thin layer of copper material at the mouthpiece of bottle , which can effectively prevent the growth of bacteria at the mouthpiece of bottle , improve people's health.