Stock trading means that stock, as the subject matter of an operation, is a professional transaction, and one person is responsible for operating and buying and selling stocks. They have a good grasp of the disk, can grasp the timing of opening and closing positions according to the requirements of customers, and control the development of the disk to a certain extent.

Usually, the process of dishwashing transactions between dealers and institutions is: preparation, opening, trial sale, sorting, initial increase, dishwashing, lifting, shipment, rebound, smashing and sweeping.