金属新材料板块7月30日跌1.96%，惠同新材领跌，主力资金净流出9.2亿元

Group 1 - The metal new materials sector experienced a decline of 1.96% on July 30, with Huitong New Materials leading the drop [1] - The Shanghai Composite Index closed at 3615.72, up 0.17%, while the Shenzhen Component Index closed at 11203.03, down 0.77% [1] - Key stocks in the metal new materials sector showed varied performance, with notable gainers including Chitong New Materials, which rose by 4.84% to a closing price of 37.24 [1] Group 2 - Huitong New Materials saw a significant decline of 6.97%, closing at 21.61, with a trading volume of 87,200 shares and a turnover of 192 million yuan [2] - The sector faced a net outflow of 920 million yuan from major funds, while retail investors contributed a net inflow of 840 million yuan [2] - The trading data indicates that major funds were net sellers in several stocks, including Xinke Materials, which had a net outflow of 38.26 million yuan [3]