The main material of this CD storage box is corrugated paper. Corrugated paper is the main material for manufacturing all kinds of cartons and packaging. The quality and strength of corrugated paper will directly affect the quality of cartons or packaging. Strict determination of all aspects of corrugated strength indicators in packaging printing and production is a very important link, for ensuring product quality and performance has a very important significance.    This CD storage box is the use of ordinary corrugated paper, because there is no need to put heavy objects, so the storage box itself bearing requirements are not high. Usually, for demanding packaging, we will sample first to corrugated board for accurate measurement. The sampling should be as representative as possible of the characteristics of the whole lot, but as small as possible.   After sampling, the paper is processed so that the measured data can be obtained under certain conditions so that the data can be compared under the same conditions. The humidity and temperature of the air have a great influence on the physical and mechanical properties of paper and board. It is necessary to make proper humidification treatment before measurement.