The main reason why the Yuyuan Shoe Factory in Gaobu Town, Dongguan closed down was because of the rising labor costs, which led to continuous compression of profits. Under huge operating pressure, it chose to move the factory to areas with lower labor costs such as Vietnam. Anyone familiar with the shoemaking process knows that this is a highly polluting industry. Printing of upper trademarks, pressing of uppers, foaming of soles, gluing of uppers and soles, etc., will produce industrial waste gas, which not only pollutes the air, but also harms the health of employees. The Yuyuan Shoe Factory in Gaobu Town, Dongguan City, Guangdong Province settled in Gaobu Town, Dongguan in 1989. This factory run by Chinese Taiwanese takes over all processing and manufacturing of running shoes of brands such as Nike, Adidas, Reebok, Puma and Asics. From the initial design to the production of glue, soles, molds, shaping, cutting, sewing, and assembly of finished products, running shoes exported from Yue Yuen Shoe Factory account for one-third of the world's shoe market.