The ISO 14968:2006 standard specifies the Measuring method for the curling of a stack of cut office paper. This method evaluates the possible deformation of the paper during processing and use by measuring the curling degree of the paper in the stacked state. The standard applies to all types of cut office paper and provides a uniform curling measurement specification for paper manufacturers and users. Through this method, the paper mass can be better controlled, the production process can be optimized, and the printing and copying problems caused by curling can be reduced, thereby improving the performance and user experience of office paper.