"The main ways for telecom enterprise residents to collect product information are"

There are direct channels and indirect channels for telecom enterprise residents to collect product information. Direct channels: collected through surveys, marketing activities, service processes and terminals. Indirect channels: through various media, industrial and commercial administrative departments and overseas institutions, domestic and foreign financial institutions and their branches, domestic and foreign consulting companies and market research companies, leasing or purchasing from companies that have established customer databases, and other channels.