主力资金流入前20：四川长虹流入8.72亿元、润和软件流入5.46亿元

Group 1 - The article highlights the top 20 stocks with significant capital inflow as of August 19, with Sichuan Changhong leading at 872 million yuan [1] - Other notable stocks include Runhe Software with 546 million yuan, Haili Shares with 432 million yuan, and Yuyin Shares with 426 million yuan [1] - The total capital inflow for these top stocks indicates strong market interest and potential investment opportunities in these companies [1]