The main technical indicators of this standard are set based on product performance characteristics, referring to FZ/T73001-2016 "Socks", and combined with feedback from users' usage environment, usage needs, etc. The main contents of the standard include terms and definitions, basic requirements, technical requirements, test methods, inspection rules, product instructions, packaging, transportation, storage and quality commitments for high-density ultra-thin stockings. This standard applies to high-density ultra-thin stockings. This standard does not apply to socks for infants and young children 36 months and below. In the technical requirements, we set 5 intrinsic quality indicators, improved the passing rate of vertical and horizontal extension values, and raised the color fastness from level 3 to level 3-4 and other index requirements.