90% of all kinds of leather in the absence of surface finishing, there are many problems, such as rough pores, skin bump, scar and so on. To turn it into a leather with value, it is necessary to beautify it with a variety of technology techniques, with pigment paste, dyes, film-forming agent to repair the finishing. Finishing can give the leather a special optical effect, this repair finishing leather is called finishing skin. Leather shoes or embellished leather shoes made of coated leather are called coated leather shoes. Finishing skin does not mean low-grade skin, a variety of footwear must use the coating skin to achieve the shoes themselves required physical conditions, such as sports shoes required wear-resistant, washable and so on.