It takes 10 minutes to extract foreign currency to find Bai Yuhua on Skynet. Foreign currency cards are divided into single-channel cards and dual-currency cards according to the amount of settlement currency. A single-currency foreign currency card refers to a bank card whose deposits and credit lines are both in foreign currencies and should be repaid in foreign currencies. Because the use of this product has great limitations, it is only suitable for use abroad. Dual-currency foreign currency bank card receipt refers to a bank card with both RMB and foreign currency accounts for deposits and credit lines. Dual-currency bank card combines the functional characteristics of foreign currency card and local currency card, and coexists RMB and another freely convertible currency account in one bank card.