Established in 2010 and registered in Beijing, Jiacheng Shangwei (Beijing) Science & Technology Co., Ltd. (here after called JS) is a technology-based company specializing in product research, development & production, technology promotion, technical consultation and service, and also provide commercial consulting service in engineering project. JS focuse on railway, transportation, electric power, municipal environmental protection, electric equipments, industrial intelligent manufacturing, and other fields, deeply ploughs into international and domestic markets. Based on wide range of business channels within & outside of China, JS is engaged in import and export business of mechanical, electrical, communication, instrument, auto parts, and other products.　　JS produce railway signal glasses and lenses in various type by own research and design. Besides JS also produce signal roundel lenses and others signal glasses in red and bluegreen colors for PR, IR, BR and others r...