Group 1 - The metal zinc concept declined by 0.02% as of the close on August 18, ranking among the top declines in the concept sector, with companies like Shengtun Mining, Zijin Mining, and Zhuhai Group experiencing significant drops [1] - Among the 15 stocks that rose, *ST Jinglan, China Nonferrous Metal, and Dazhong Mining led with increases of 5.26%, 2.30%, and 2.19% respectively [1] - The metal zinc concept saw a net outflow of 1.194 billion yuan from major funds today, with 25 stocks experiencing outflows, and 5 stocks seeing outflows exceeding 50 million yuan [2] Group 2 - The top net outflow stocks in the metal zinc concept included Zijin Mining with a net outflow of 514.97 million yuan, Shengtun Mining with 345.54 million yuan, and Hunan Silver with 103.19 million yuan [3] - Conversely, the stocks with the highest net inflows included China Nonferrous Metal, Zhongjin Lingnan, and CITIC Metal, with inflows of 48.08 million yuan, 20.43 million yuan, and 18.70 million yuan respectively [2][3] - The trading volume for Zijin Mining was 1.27%, while Shengtun Mining had a turnover rate of 7.04% [3]