What paper do you usually use to print or copy things?

Usually A4 paper. Print shops generally use ordinary office white paper, because this is the limitation of printers. Many art papers have patterns on their surfaces. If the paper is thick, ordinary printers will get stuck. Of course, the bigger professional graphic shops all have printers that specialize in printing thick paper such as whiteboard paper, wood grain paper and mimeographed paper, but the cost is relatively high! Generally, you can choose good quality printing paper! Engineering drawing is generally A3! Printing paper refers to a kind of paper used to print and copy documents. Specifications are A0, A 1, A2, B 1, B2, A4, A5, etc. A4 paper, which is commonly used, is widely used in examination papers. In order to meet the needs of different users, there are some alternative printing papers on the market. For example, paper for printing photo stickers, double-sided business card inkjet paper, special paper for printing photos on clothes and printing transparent films.