Choice of outdoor parasol fabrics. Domestic fabrics are generally divided into polyester fabrics and yarn-dyed fabrics. The biggest difference is that the polyester fabric is woven into fabric first, and then dyed. Yarn-dyed fabric is dyed with silk first, then dyed silk is woven into fabric, and then dyed. Therefore, the color fastness of yarn-dyed fabric is much higher than that of polyester fabric.