4, canvas width: width: refers to the zonal width of the canvas, often in the international Used in the country, inches and centimeters conversion formula: 1 inch = 2.54 cm common conversion in the form canvas width calculation: inches centimeters general usage 36 90cm 47 : 7, strong: the powerful man-made cotton less than cotton, especially in wet conditions, rayon fastness is poor, when compared from the fabric edge spinning, stretching, more cotton, rayon wire easily broken, so most of rayon thick texture, no cotton yarn as thin. 1. plain cloth plain cloth in common is the use of plain weave woven system, warp and weft of the linear density and fabric weft yarn density in the same or similar. Depending on the thickness of warp and weft can be divided into coarse cloth, Zhongping cloth and fine cloth.