China Information Network is hosted by  the Harbin Chang Jie Data Services Limited company . Chang JieData Services Ltd  company is a unit of SME Association executive directors, is also the editor and manufactuer of Harbin SME practical navigation.  Now we will introduce Harbin Chang Jie Data Services Limited company briefly in order to let  the global enterprise to know more about us, and to serve more enterprises well. Chang Jie Harbin data services company is a valuable information provider (the qauntity of the national database is more than 500 million and the local database is more than 20 million).  The company is engaged in data processing services, information consulting services, electronic product R&D, electronic product design, marketing and web business for several years. There are many representitive products  ,such as Harbin SMEs "Trinity" information service system,Harbin SME practical navigation,the management system of primary and secondary digital reading room and modern logistics platform,constructed by Harbin development non-public economic work leading group office.SME bureau of Harbin and Harbin SME association .And the company cooperate with  the Heilongjiang province education facilities to install reading room management system for many primary and secondary schools.