This standard specifies the terms and definitions, product classification, requirements, test methods, inspection rules and signs, packaging, transportation, storage of mats used in bathrooms and in front of doors (hereinafter referred to as "mats"). This standard is applicable to the quality judgment of small block mats, which are used in bathrooms and in front of doors, etc., made of chemical fiber, cotton, wool, blended fiber mat surface raw materials. The mats, which are made of other fiber materials, can also be used as a reference.