A shares are RMB ordinary shares issued by companies registered in China, listed in China and subscribed and traded in RMB. A shares are not physical shares. They keep accounts electronically, without paper. The delivery system is "T+ 1" (stocks are bought on the same day and can only be sold on the next trading day), and the price limit is generally 10%. A shares are also called tradable shares, public shares and common shares. A shares include the following sectors: main board, growth enterprise market, science and technology innovation board, small and medium-sized board, etc. The presentation of stock codes can also help investors easily identify various stocks. The rules of various stock codes of A shares are as follows: A shares in Shanghai stock market start with 600, 60 1 or 603, and the subscription codes of new shares start with 730, 780 or 732; The trading code of Shanghai Science and Technology Innovation Board starts with 688, and the subscription code of new shares starts with 787. Shenzhen A shares: starting at 000; The code of Shenzhen A-share trading is GEM at the beginning of 000: stocks at the beginning of 300; Small and medium-sized board: beginning with 002; When trading stocks, you need to pay attention to the commission. Low cost can save a lot of money for our investment. Want to open a securities account, Huatai Securities currently has an account opening activity: 1. Opening an account through the VIP account opening channel can enjoy the ultra-low rate that only tens of millions of customers can have (the service manager will contact to adjust the rate within two working days after the account opening is successful, and the staff will manually adjust the rate to the VIP file). 2. Give new customers a free one-year second-class ten-file quotation (you can get it by logging in to the mobile phone software "Zhang Le Fortune"). 3. New customers have the right to wealth management (you can check and get it in Zhang Le Wealth-My Wealth Management Voucher). Friends who want to open a securities account can click on the link below or * * Huatai Securities staff * * to find out.