The cardboard of a business card has perforations, there are fewer print side of the back side, and there are various problems to use for work, if you print out by yourself. The one that can be printed on that point is convenient because there is no such restriction. Prior to this I was using the things of other companies, but shifted to here as it was canceled. For me who wants to change the contents frequently, I do not like to give it to a print shop, so I find this kind of useful. It may not be popular, but please do not lose it, Mr. Kokuyo.