What are the area codes of cities in Guangdong Province? Who can tell me? ! ! ! ! ! ! !

Guangzhou City, Guangdong Province 020

Shantou City, Guangdong Province 0660

Yangjiang City, Guangdong Province 0662

Jieyang City, Guangdong Province 0663

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Maoming City, Guangdong Province 0668

Jiangmen City, Guangdong Province 0750

Shaoguan City, Guangdong Province 0751

Huizhou City, Guangdong Province 0752

Meizhou City, Guangdong Province 0753

Shantou City, Guangdong Province 0754

Shenzhen City, Guangdong Province 0755

Zhuhai City, Guangdong Province 0756

Foshan City, Guangdong Province 0757

Zhaoqing City, Guangdong Province 0758

Zhanjiang City, Guangdong Province 0759

Zhongshan City, Guangdong Province 0760

Guangdong Province Heyuan City 0762

Qingyuan City, Guangdong Province 0763

Yunfu City, Guangdong Province 0766

Chaozhou City, Guangdong Province 0768

Dongguan, Guangdong Province City 0769