In 1950, Dr. Dong Qifang, an American scientist of Chinese descent, developed directional glass microspheres, and subsequently developed reflective materials such as reflective cloth. In 1968, the US ROWLAND brothers invented and registered micro prism retroreflective technology. These early experts and research staff poured a lot of hard work on reflective materials and achieved certain phase results. Basically, the basic production process principles of reflective materials were explored. However, under the prevailing conditions, due to the foundation of chemicals, etc. Industrial weakness, special coatings, glass beads and other raw materials could not be solved, and there was no stereotyped production equipment, which limited the industrialization of reflective materials under certain conditions. Research institutes such as the Institute of Highway Science and Technology of the Ministry of Communications and the Institute of Optics of the Chinese Academy of Sciences all organize experts and special funds, established a research team and conducted research projects. However, in China, another type of reflective material, namely the reflective material of microprisms, has just been in its infancy. By the beginning of the 21st century, it was only in the early 20th century that several shoe companies in Jinjiang, Fujian Province, were making mistakes. Reflective crystal lattices for civilian products in microprisms have undergone several years of evolution. Although the quality of products has been improved, they still remain the most primitive mode of production and batch production. The world's manufacturers of such products basically On the implementation of continuous production. Although there has been little progress in the development of core technologies, several domestic manufacturers have introduced a new form of product—reflective inkjet cloth. The introduction of reflective inkjet cloth will develop a new market for reflective materials—the advertising market. In the 1980s, Taizhou Reflective Materials Co., Ltd. mainly started to develop high refractive index glass microspheres, and gradually solved the most important raw material for developing reflective films, laying the foundation for the localization of reflective materials in China. After the 1990s, domestic reflective materials made of microspheres have made great progress. They have developed advertising grade reflective film, engineering grade reflective film, high-strength grade reflective film and other reflective materials containing beads, while reflective cloth Reflective leather, reflective fuses, and reflective thermal films have also been launched. By the 1990s, non-glass bead-type products had basically matured in China. In this industry, there were also relatively large scales such as Huasheng, Daoming and Jingli. Business. Www.czyfaudio.com