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The thickness of the paper is the thickness of the paper. Measured by micrometer, the thickness of paper is measured under certain area of pressure. The general pressure is 980thousand PPA. The thickness of a batch of paper or cardboard is generally required.
Otherwise, the thickness of the paper is not consistent. Tightness refers to the weight of paper and paperboard per cubic centimeter. The result is expressed in grams / cubiccentimeters. Tightness is the index of the tightness of paper or paperboard structure, and is the basic property of paper and paperboard.
