Changyu Holding Group Co., Ltd. (hereinafter called "Changyu Group") is located in Zibo National New&High-tech Industrial Development Zone, Zibo City, Shandong Province, a famous historical and cultural city in China. Changyu Group is an enterprise group with high-end new materials as its main business. The main products are zirconia, zirconium oxychloride, nano zirconia powder materials, long carbon chain special nylon materials, long carbon chain dibasic acids, long carbon chain diols, etc., which are widely used in automobiles, home appliances, communications, smart wearables, high-performance ceramics, pharmaceuticals and other fields. Our products are exported to Europe, the United States, Japan, South Korea, India, Southeast Asia and other countries and regions. It is an international leading supplier of zirconium industry chain and a domestic first-class research and development and production base for new chemical materials.