1. Cardboard boxes

2. The Chinese invented paperboard, or cardboard, over four-hundred years ago. The first cardboard box was produced in England in 1817 In the 1850's cardboard formed from corrugated paper was produced and used as packaging to ship products.

3.  Cardboard can be made by wood or recycled paper by pasting layers of paper together. It can also be made by pressing layers of wet paper pulp together and heating it up and cut to size

4.  There are different types of cardboard, such as strawboard, bending board, news board or Bristol board.

6.  How is it made  Google  YouTube

7. How is it made videovideo