Yiyoushi is a brand, the lens brand of UniOptics, which is now owned by Essilor.

With the purpose of "concentrating on the field of optics", UniOptics focuses on aspheric surface manufacturing. It mainly produces 1.56 spherical surface, aspheric surface, 1.56 tea, gray aspheric, 1.60 MR-8, 1.67 MR-7 aspherical and other high-definition and difficult-to-use films. We also made a huge breakthrough in the production of contact lenses and obtained a medical device production enterprise license number.

Jiangsu Youli Optical Glasses Co., Ltd. specializes in optical products. It is a professional company integrating research, production and sales. After many years of lens production and manufacturing, it has accumulated rich and powerful production technology and advantages, providing To further meet market demand, in 2008, the company added an additional 72 acres of land and a new factory building area on the basis of the original Jiangsu Xianrenshan Optical Co., Ltd. (founded in 2000) and Jiangsu Asia Electronic Optics Co., Ltd. (founded in 2002). 50,000 square meters, and founded Jiangsu Zunlong Optical Co., Ltd.

Introduced several internationally advanced production equipment. The company has 1,000 employees, 23 coating machines, 5 sets of fully automatic hardening and cleaning equipment, 6 sets of fully automatic mold cleaning machine production lines, and a set of American Cobain garage equipment. The company mainly produces 1.56 spherical, aspherical, 1.56 aspherical, gray aspherical, 1.60MR-8, 1.67MR-7 aspherical and other various types of glass and high-difficulty film.