This standard specifies the product classification, requirements, test methods, inspection rules and marks, Encasement, transportation and storage of paper and Cardboard folding resistance testers. The folding resistance tester is suitable for the folding fatigue strength test of sheet materials such as paper, Cardboard and Tobacco flakes, referred to as the folding resistance tester. At the same time, it is recommended to check the cycle technical status of the folding resistance tester in use. Miscellaneous documents are quoted in the standard, including Encasement storage and transportation diagram signs, paper folding resistance measurement method, Cardboard folding resistance measurement method, MIT folding resistance tester method, signage and general technical conditions for light industrial machinery. In terms of product classification, folding instruments are mainly classified by application field and structural type.