The ISO 1 2625-12: 2010 standard specifies the method of testing the tensile strength of the perforation line and the calculation of the perforation efficiency of tissue paper and thin paper products. The standard is mainly used to evaluate the strength of the paper after perforation and the effect of the perforation design on the paper performance. During the test, the effect of perforation on paper cohesion is determined by measuring the tensile strength of the paper in the direction of the perforation line. The calculation of perforation efficiency helps to optimize the product design to ensure that the paper is separated with sufficient strength and can be easily torn. This method is based on the ISO 1 2625-4 standard test procedure, ensuring the accuracy and conformity of the results.