非金属材料板块2月2日跌4.7%，龙高股份领跌，主力资金净流出1.16亿元

Market Overview - The non-metal materials sector experienced a decline of 4.7% on February 2, with Longao Co., Ltd. leading the drop [1] - The Shanghai Composite Index closed at 4015.75, down 2.48%, while the Shenzhen Component Index closed at 13824.35, down 2.69% [1] Stock Performance - Key stocks in the non-metal materials sector showed varied performance, with the following notable changes: - Lili Diamond (301071) increased by 1.33% to a closing price of 40.43, with a trading volume of 189,000 shares and a turnover of 774 million yuan [1] - Longao Co., Ltd. (605086) fell by 9.99% to 39.64, with a trading volume of 41,400 shares and a turnover of 171 million yuan [2] - Other significant declines included: - Lianrui New Materials (688300) down 7.79% to 61.59 [2] - Ningxin New Materials (920719) down 5.15% to 12.35 [2] - Qilu Huaxin (920832) down 4.61% to 7.45 [2] Capital Flow - The non-metal materials sector saw a net outflow of 116 million yuan from institutional investors, while retail investors experienced a net inflow of 61.17 million yuan [2] - The capital flow for key stocks indicated: - Lili Diamond had a net inflow of 8.08 million yuan from institutional investors [3] - Longao Co., Ltd. faced a net outflow of 30.33 million yuan from institutional investors [3] - Notable outflows were also observed in: - Ningxin New Materials with a net outflow of 0.77 million yuan [3] - Qilu Huaxin with a net outflow of 2.84 million yuan [3]