Beijing van guo science and technology limited is registered at unit 1008, building 1 in the 1st court building of yulongjiangjiang, changping district, beijing. The registration authority is the market supervision authority of changping district, beijing. It is represented by a legal person, and operates in the areas of technology promotion, technical services, technical advice and technology development; software development; data processing (bank card centres in data processing, except cloud computing data centres with a pue value of 1. 4 or more); computer systems services; import/export of goods, technology and exports; marketing of electronic products, computers, software and assistive equipment; internet information services; retail publication; and wholesale publication. (the market subjects are legally free to choose to operate projects and carry out business activities; the internet information services, the retail sale of publications, the wholesale distribution of publications and projects subject to legal approval, which are carried out with the approval of the relevant sector; and not to engage in activities which are prohibited and restricted by the state and municipal industrial policy