Why is A4 paper called A4 paper? | A4 Paper Production Line
A4 paper is the most common and common thing in daily life and work. Everyone knows about A4 paper. It contains the greatest energy, so let's take you into the seemingly simple world of A4 paper. Why is A4 paper called A4 paper? First of all, we have to start with paper A. What is A size paper? A-size paper is actually a batch of papers of different sizes, and the numbers carried behind it can be understood as the number of times of folding each other, while A4 paper is actually the size of the paper folded in half for the fourth time of A0 paper. Straightforward name! How big is A4 paper? The size specification of A4 paper is 210*297mm, also known as 16K. Generally, paper mills cut paper of 846*1194mm (this size is the size of large paper with the least loss in cutting A4), and a piece of paper of this size is cut into 16 Zhang, so it is called 16K. The double size of A4 is A3, also known as octavo. The rest of the dimensions can be deduced by analogy. As follows: A4 paper size (...