1. The concept of printing and dyeing is the printing and dyeing process, in general, printing and dyeing on textiles, so that the dye can fully and thoroughly penetrate into the fabric structure, so that fresh and natural flowers, abstract geometric patterns or patterns of various styles are formed in the fabric. With the colorful colors such as beautiful, passionate and bright, it draws people’s visual senses, and enables people to create passion, release emotions, and admire individuality. Products with good printing and dyeing quality have vivid patterns and lifelike patterns, with no printing plates and color differences, and no stains, discoloration, and other phenomena. Printing and dyeing is generally divided into reactive printing and dyeing and coating printing and dyeing. The cost of reactive printing and dyeing is higher, and the advantage is that it does not fade; the printing and dyeing cost of coatings is lower, but the color fastness is not as stable as that of reactive printing. Printing and dyeing pigments are imported as well as domestically produced. Generally, printing and dyeing that do not contain azo and other components such as cancer and heavy metal pb are called environmentally friendly printing and dyeing. At present, the state enforces the standard that textiles cannot contain substances harmful to human health. Manufacturers who violate the regulations will be severely punished or even suspended for rectification.