Recently, China Securities Index Co., Ltd. announced that it will adjust index samples such as the Shanghai and Shenzhen 300, China Securities 500, and China Securities 1000. This adjustment is a regular routine adjustment of index samples. The regular adjustment plan will officially take effect after the market closes on June 14. According to index rules, after review by the index expert committee, the Shanghai and Shenzhen 300 Index replaced 12 samples; China Merchants Highway, COSCO Haineng, etc. were transferred to the index; the China Securities 500 Index replaced 50 samples, central control technology, fluorite networks, etc. were transferred to the index; the China Securities 1000 Index replaced 100 samples, and the energy saving environment, Huaming equipment, etc. were transferred into the index. In addition to the above indices, samples of other indices will also be adjusted accordingly. After this sample adjustment, the main indices have further improved their ability to serve the country's strategy and the real economy. The sample size of industries such as industry, information technology, and communication services has increased, and index representation has been further enhanced.