The ISO 2493-1: 2010 standard specifies a procedure for determining the flexural strength of paper and Cardboard based on the two-point loading principle. It is suitable for the Measurement range of 20 mN to 10000 mN. The standard does not apply to corrugated fibreboards, but can be used for their components. When tested, the bending angle is 15 ° and the bending length is 50 mm; for low flexural strength samples, it can be shortened to 10 mm, and easy-to-deform Cardboard can be used with a 7.5 ° half-bend angle. The standard provides a uniform test method for the evaluation of the physical performance of paper and Cardboard. It is widely used in industries such as Encasement, printing, etc., to ensure that the bending performance of the material meets the actual needs of use.