tongzhou changjiang screen factory is one of the earliest professional producing enterprises to research, develop and produce electric teaching screens and projection screens. there are advanced producing equipments and experienced employees. the products have the system of strict quality management.the well-known ‘changjiang’ screen passes the examination of national authority section year by year . the products are popular with business meetings , education and home theater, our products are exported to many countries such as turkey, new zealand, malaysia,indunesia, england, korea etc.they win the good reputation in quality and service in the world market. the factory lies the north share of the yangtze river delta and the east of yellow sea . shanghai ‘s lights are seen here . there are airport, railway,calzada and port from soup to nuts. with the sutong bridge being set up , there are only two hours of road from tongzhou to shanghai. the transportation is so convenient and the environment is so beautiful that it is the idealest place where you invest. ‘trustworthiness, practicality, innovation and choiceness’ is the factory’s tenet. the new and old customers are welcome to talk over cooperation affairs with letters or in person.