Market Overview - On August 19, the non-metal materials sector rose by 0.1% compared to the previous trading day, with Ningxin New Materials leading the gains [1] - The Shanghai Composite Index closed at 3727.29, down 0.02%, while the Shenzhen Component Index closed at 11821.63, down 0.12% [1] Stock Performance - Ningxin New Materials (839719) closed at 17.27, up 2.61% with a trading volume of 102,900 shares and a transaction value of 179 million [1] - Other notable performers included: - Quartz Co. (603688) at 40.75, up 2.18%, with a transaction value of 1.561 billion [1] - Changjiang Materials (001296) at 21.37, up 1.96%, with a transaction value of 208 million [1] - Conversely, Longgao Co. (605086) closed at 28.09, down 0.60%, with a transaction value of 56.54 million [1][2] Capital Flow - The non-metal materials sector saw a net inflow of 11.36 million from institutional investors, while retail investors experienced a net outflow of 46.99 million [2] - The sector's capital flow details include: - Quartz Co. (603688) had a net inflow of 45.43 million from institutional investors [3] - Longgao Co. (605086) faced a net outflow of 8.34 million from institutional investors [3] - Retail investors showed a significant outflow from Longgao Co. (605086) amounting to 5.53 million [3]