사설토토: 10 Things I Wish I'd Known Earlier
https://logiusnk1y.doodlekit.com/blog/entry/5165862/from-around-the-web-20-awesome-photos-of-
The paper is impregnated having a sound-condition combination of a dye and an acceptable matrix; a combination of a fluoran leuco dye and an octadecylphosphonic acid is really an case in point.