In general, the paper we refer to is, in a broad sense, the terms paper and cardboard. In fact, the difference between paper and paperboard is merely differentiated from its quantitative (relative weight per square meter area of paper). People generally refer to paper within 200 g/m2 as paper; and 200 g/m2 or more paper as paperboard. In the past, the quantitative regulations for paper and board in China were: papers below 150 m2 are called paper, and papers above 200 g/m2 are called paperboard. Will be between 150-200g/m2 called cardboard (base paper).