This is a national standard used to evaluate the resistance of various shoelaces to wear under repeated friction. The standard primarily specifies three different test methods to simulate the wear scenarios shoelaces may encounter during actual use, including: friction between shoelaces, friction between shoelaces and standard metal eyelets, and friction between shoelaces and real eyelets cut from finished shoes. When conducting these tests, specialized shoelace abrasion testing machines are typically required, such as models like SATRA STM 439 (for shoelace-to-shoelace friction testing) or STM 152 (for shoelace-to-eyelets friction testing). The technical content of this standard is equivalent to the international standard ISO 22774:2004, helping align the quality control of footwear products in China with international standards.