Yiping Optical Co., Ltd. is a contract manufacturer of high-precision optical and crystal components based in Shanghai, China. Established in 2007, the company specializes in the design, production, and sale of a wide range of optical products. Their offerings include various types of lenses such as spherical, plano-convex, concave, double convex, double concave, meniscus, hemisphere, super-hemisphere, and achromatic lenses, as well as prisms, optical windows, shaped components, and punching pieces. Yiping Optical utilizes a diverse array of materials including optical glasses like crown glass, flint glass, heat-resistant glass (Pyrex), UV fused silica, and Infrared fused silica, alongside optical crystal materials such as calcium fluoride (CaF2), magnesium fluoride (MgF2), zinc selenide (ZnSe), germanium (Ge), silicon (Si), and sapphire. They also provide optical coatings, including anti-reflection, spectro-film, high-reflectance multilayer, and metal membranes. With a factory and advanced production and testing equipment for processes like cutting, fine grinding, polishing, and coating, the company employs 11 to 50 people and holds an ISO 9001 certification. Their products are widely applied in optical communications, military, medical, and educational sectors.