Cardboard material should be how to distinguish? Carton is so much to see in our daily life, more or less can avoid contact with carton, the paper boxes is good so what?1, the best thing to do is weighed. Paper weight is unable to do false a candy, it is essential.2 surface gloss, because leather are thick paper, the production process requirements for surface gloss is not high, but the demand level off, can it be seen in the core paper, which is the core of paper can only make the middle wave and the cause of the septum, then it, rough and strong absorbability and glue.3. The hardness and thickness, it is also an important parameter of the paper, the high hardness of not thick, thick does not necessarily high hardness.4. Handle, this is the experience and contact with the cardboard more at ordinary times, you can practice "carton hands", this is more, many stamps, more pinched.