The Romanian Leu (RON) is the official currency of Romania, introduced in 2005. It is identified by the ISO 4217 code RON and is commonly represented by the symbol lei or L. The issuance and management of the Leu are overseen by the National Bank of Romania. Currently, circulating banknotes include denominations of 1, 5, 10, 50, and 100 Lei. Additionally, there are coins in denominations of 1, 5, 10, and 50 Bani. The Bani is the subsidiary currency of the Leu, with 100 Bani being equivalent to 1 Leu.

The United States Dollar (USD) is the official currency of the United States, first issued in 1792. It is identified by the ISO 4217 code USD and is commonly represented by the symbol $. The authority for issuing US dollars lies with the United States Department of the Treasury. Currently, circulating US dollar banknotes include denominations of 1, 2, 5, 10, 20, 50, and 100 dollars, along with coins in denominations of 1, 5, 10, 25, 50 cents, and 1 dollar. The U.S. Dollar ranks first globally in terms of trading volume, comprising 88.3% of the total global foreign exchange transactions. Local money changers in Hong Kong all offer the buying and selling of U.S. Dollars.