Established in 1991th, it was the biggest and earliest binoculars manufacturer and exporter of China, especially for the opera glasses.From 1998th, CCTV lens becames the main product of it. Now, CHILINVISION has formed a strict quality of the management system for over 15 years continued efforts and practices, which based on the criteria of manufacturing products of the war industry, and has gained the ISO9001,CE, RoHs quality management, so the quality of products can be ensured well enough. Our main products: CCTV Lens, including all ranges lens such as Vari-focal lens, Zoom lens,pinhole lens etc. Camera: day/night water proof camera, dome camera Binoculars: Opera Glasses. Output of our products Per Year: 20K pcs lenses, and 1 million telescopes. Our staff: nearly 200 employees with over 10 technicians. Our technology: The high-qualified technology-developing stuff, great CAD-CAM platform have given a guarantee of the function of products, and ZMAX platform design ability, which are in the leading place at home and abroad. We keep developing new CCTV lens products every three months by flexibility and high capacity, and we have the most complete series of CCTV lens in China mainland as well! Our Quality Control: xxxxx: for one simple 3.5-8mm DC lens, it need 6 steps to test. from components of lens body, image, open/close iris, adjust the glasses to make image more xxxxx Our products guarantee: The first 2 years replacement and the 3rd year maintaining for free if the quality problems. Our services: We deliver your orders fast, just 2 to 7 days from order to shipment. Products price VS quality: We save on assembly costs while improving performance, and we inspect 6 times of our output, more than the competition, and keeping zero returns till now!