Gauze, as the name suggests, is a cloth with very sparse warp and weft.21s, 32s, 40s pure cotton yarn refers to the thickness of cotton yarn, s is the number of imperial count, representing the density of yarn. Et maior numerus, et melior est bis. S refers to the Imperium numerare, maior comitem, et melior est. So they are: 21S represents 21 single yarn, 32S represents 32 single yarn, 40S represents 40 single yarn The warp and weft yarn is a major element of the fabric, and the warp and weft yarn changes into another fabric. Quia pannos dividitur in stamine et weft, stamine numerare vocatur stamine, et rursum comitem dicitur avium. Disputatio specificationem characteres bombacio maxime referre ad bis numerare, densitas latitudine pondus et longitudinem. Yarn count refers to the thickness of fabric warp and weft yarn, expressed by the number of warp (count) * number of weft yarn (count), such as cotton muslin 30*36 means 30 warp yarn, weft yarn is 36. The higher the number of yarn, the thinner the fabric, the higher the textile technical requirements, more than 40 is called high count. XL pieces exprimuntur in 40s, 40s / II SUTURA refers to the sutura filum factum ex II firmina de XL pieces of bis. Density refers ad numerum stamine aut avium relatorum per 10cm longitudinem fabricae, densitas fabricae habet directum necessitudinem cum suis viribus, elasticitate, sentire, tenuis densitate, et de Cottono fabricae est de 100-600 radices.