Guangdong Telecom is the operating branch of China Telecom in Guangdong Province, providing mobile communication, fixed telephone, broadband Internet and other communication services. China Guangxin calling card is a prepaid calling card. Users can recharge a certain amount when purchasing this card, which can be used for making phone calls, sending short messages and using other communication services. The calling card provides local calls, domestic long-distance calls, international roaming and other functions, and different packages or tariff schemes can be selected according to users' needs.