Have you ever met this, if ever where?
>Often I meet this paper but I do not know what its usefulness. Maybe some one know please write in my comment. I was surprised to see that when someone came out of the store or other place immediately throw this paper away. Whether for them this paper is not important.
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@apacutrizki, Thanks for my friend 
@munawarkhalil12 who sent this picture to me.
# I wait for the information in my comments, about the usefulness and function of this paper.