The full name of OTC is OverTheCounter, which is translated into OTC market in Chinese. It is also called OTC market or OTC market. Completely different from the exchange market, OTC has no fixed place, no prescribed members, no strictly controllable rules and regulations, and no prescribed trading varieties and restrictions. The main thing is that counterparties conduct one-on-one transactions through private consultations. The OTC market is the most market-oriented and liberalized: the competition is the fullest and fiercest, and the development is the most perfect.