According to the relevant information, we found nearly 1000 consultants in the company, each of whom is responsible for the special market and quotation, and has been in contact with the local major markets for a long time to collect relevant information. Basically, traders are consulted by telephone or communication software, because quotation collectors are familiar with mainstream traders and can collect relevant prices. The daily production price of steel mills will also be used as relevant reference according to the daily price list published in the trade market. Basically, it's the above way.