What's the use of membership in the stock exchange? Please give a simple oral answer, or I can't understand!

1. The members of the Exchange are securities firms approved after application. 2. Members are divided into ordinary members and special members. Ordinary members are domestic securities companies with legal personality; Special members are representative offices established in China by overseas securities institutions. 3. Full members refer to all the above-mentioned members and have been approved. However, members still need to apply to the exchange for trading rights and get more than one seat, which is the difference between full members and other members.