Characteristics：
* Reliability：ensure work reliably over a long time
* Safety：adopt 1024 digits and RSA encyption technology to ensure safety of data and system
* Completeness：ensure complete data exchange;
* concordance：ensure the data to be concordant;
* consistent：serve every day every time;
* opportune：process and transmit data and information on time;
* exoteric ：adopt exoteric structure and funtional distribution systems
* expandibility：keep step with the development of market,rules,and technology.