Now a way of selling drugs. Drug manufacturers, to a certain base price to sell drugs to pharmaceutical representatives, pharmaceutical representatives will be drugs through 1 to 2 pharmaceutical business operations, the drugs to the current market price sales to hospitals, a realization of the marketing process. During the period, you take goods from the manufacturer, you must pay a certain amount of money, which is the advance.
Also, in the sales process in the hospital, you also need to pay the doctor's clinical observation fee, which also requires a certain amount of money turnover, which is also part of the advance.