How about Dongguan Changan Yutong Optics?

Good optical equipment and good quality.

Dongguan Changan Yutong Optics is a high-tech enterprise specializing in R&D, production and sales of optical products. The company covers an area of150,000 square meters, with a monthly lens production capacity of10,000, an annual output value of/kloc-0,000,000 yuan and more than 2,500 employees. Yutong Optics is committed to expanding the service map of Yutong brand lenses, and its products serve many world-renowned security monitoring industries and optical instrument customers.