Nanjing Effect Electro-Optic Technology Co., Ltd. is a professional manufacturer of high precision optical parts, located in the beautiful eastern suburbs of Nanjing, China. We have rich advantages including unique inspection instruments and production process in manufacturing 90 degree related prisms. The angle tolerance can be guaranteed within +/-1sec. We also have a creative team to keep the overall high level quality. Our products include corner cube prisms, roof prisms, penta prisms, right angle prisms, rhomboid prisms, less 400 flat reflectors and 90 degree masters. We have been trusted by several global high-end optical customers. We have been the core strategic partner of German Berlin Glas Group for five consecutive years. Our vision is ''doing thing in a precise, professional and practicable way''. ''Quality Paramount, Price Competitive and Service Best''