China's glass enterprises are mainly distributed in Liaoning, Hebei, Shandong, Jiangsu, Zhejiang, Guangdong, and Fujian, and now there are also some production lines in Inner Mongolia and the central and eastern regions of Northwest China. The fragile nature of glass itself and the limitations of transportation have led to its sales model being divided into intensive marketing within 300 kilometers, selective distribution within 300-800 kilometers, and exclusive marketing beyond 800 kilometers. This means that the sales radius of glass enterprises, as we often say, is 500 kilometers. Many glass companies mainly rely on demand areas when building factories. With the large-scale development and construction in the central and eastern regions of China, glass companies have formed a considerable scale in this area. Glass production enterprises in Hebei (represented by Shahe area in Xingtai City), Shandong, Jiangsu, and Guangdong have become industry representatives.