Nowadays, most credit cards are sent by postal service registered mail (which is what you call surface mail).
As long as the registered mail is confirmed to have been delivered, generally intra-provincial mail can be delivered in about 3 days, and inter-provincial mail can be delivered in about 5 days. (It takes about 5 days to deliver from Nanjing to Shenzhen)
2015-09-02 09:46:09 The letter bureau of Danyang Post Office in Zhenjiang, Jiangsu Province has received and sent
2015- 09-02 13:50:49 Leaving Danyang, the next stop is Nanjing Center
2015-09-03 07:09:24 Leaving Nanjing Postal District Central Bureau, the next stop is Guangzhou Center
< p>Your registered letter has been sent to Guangzhou this morning. Information will be updated and uploaded upon arrival.You can follow the circulation information on the postal service's mail inquiry website.