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It's a particular condom considering the blind,on whichBraille will be marked on the box and condoms.They can easily know the product shelf life.Further more,surrounding the latex, distributes the raised braille.so,it is helpful for the blind to use and it will increase the condom fit.Meanwhile,the ordinary people can use it.
Wuhan University of Technology
Xiong Jian,Xu Wenxin,
WuHan University of Technology