even print paper is of self-production

Yesterday some coleague says her hand is cut by the print paper in her signature :(

I have been feeling good for the print paper, but just thought the company bought some good papers until I saw her signature. Then I thought it is more tight (中文应该说紧实有质感) So......I saw the paper cover -- ......Even the paper is self-production! Haha......

The black part can be touched out, really~