CASTECH manufactures a wide range of high precision spherical, cylindrical and flat optics components for OEM customers from Industries of Laser, Telecom, Biomedical instruments and Analysis instruments. We utilize different manufacturing processes including CNC, rotational, double-sided polishing and thin film coating with IBS, IAD, EB technique. Combined with our wide experience and deep knowledge, we are able to deliver the optimum solution for your applications. We are flexible in customized products and features in high surface accuracy up to 1/20 wave, high surface quality up to 10-5 scratch/dig, and low surface roughness up to 2 angstrom. We are also well experienced in the high laser damage threshold coating by our unique proprietary technology.