China Bank, China Industrial and Commercial Bank, China Agricultural Bank, China Construction Bank, Bank of Communications and China Merchants Bank are all banks approved by the state to engage in foreign exchange business.

To exchange foreign currency in these banks, you need to bring one of the following valid documents: my ID card, household registration book, military ID card, Hong Kong and Macao residents' passes to and from the Mainland, passports, and fill out the foreign exchange form in accordance with bank regulations. Different bank outlets have different foreign currency reserves, so it is better to choose a higher level. At present, 130 overseas countries and regions have covered the network of unionpay, so when spending by credit card abroad, as long as the other party has the logo of unionpay, the payment can be completed with unionpay cards issued by domestic banks.

In addition, international payment organizations MasterCard and VISA are also cooperating with state-owned banks. For example, MasterCard has successfully cooperated with China, agriculture, industry and construction to issue credit card products free of currency conversion fees. When applying for a visa in a domestic bank, you need to provide ID card, income certificate, social security card, residence certificate (real estate license/lease contract) and other supporting documents, and fill in the relevant application form.