In the past few years, our business absorbed and digested advanced technologies both equally at home and abroad. In the meantime, our company staffs a group of experts devoted to your advancement of Night Vision Devices, Infrared Surveillance, Precision Polished Aspheric Lenses, Spherical And Aspherical Lens,Lens Assemblies. We have been in operation for more than 10 years. We are dedicated to quality products and consumer support. We invite you to visit our company for a personalized tour and advanced business guidance. The product will supply to all over the world, such as Europe, America, Australia,Hamburg, Korea,Swiss, Sao Paulo.With the advanced workshop, professional design team and strict quality control system, based on mid- to high-end marked as our marketing positioning, our products are fast selling onto European and American markets with our own brands such as below Deniya, Qingsiya and Yisilanya.