1. Securities, fund companies and other enterprises and institutions that need to establish enterprise customer service hotline (call center);
2. Enterprises engaged in national businesses (including IT electronics, manufacturing, logistics, tourism services, media and information industries, etc.). );
3. Information value-added services, information stations, Internet companies (ISP/ICP), etc.
4. National chain enterprises;
5, government agencies, the structure of the communication bridge between the government and the public;
6. Enterprises that fail to apply for special short numbers as access codes for enterprise customer service centers in the Ministry of Information Industry.