非金属材料板块10月28日涨3.36%，石英股份领涨，主力资金净流入1.45亿元

Core Insights - The non-metal materials sector experienced a significant increase of 3.36% on October 28, with Quartz Co. leading the gains [1] - The Shanghai Composite Index closed at 3988.22, down 0.22%, while the Shenzhen Component Index closed at 13430.1, down 0.44% [1] Stock Performance - Quartz Co. (603688) saw a closing price of 42.44, with a notable increase of 10.01% and a trading volume of 277,100 shares, amounting to a transaction value of 1.16 billion yuan [1] - Other notable performers included: - Dongfang Carbon (920175) with a closing price of 13.17, up 3.70% [1] - Longgao Co. (605086) with a closing price of 25.60, up 3.56% [1] - Lianrui New Materials (688300) with a closing price of 65.45, up 2.86% [1] Capital Flow Analysis - The non-metal materials sector saw a net inflow of 145 million yuan from institutional investors, while retail investors contributed a net inflow of 79.83 million yuan [2] - Conversely, speculative funds experienced a net outflow of 225 million yuan [2] Individual Stock Capital Flow - Quartz Co. (603688) had a net inflow of 237 million yuan from institutional investors, but a net outflow of 168 million yuan from speculative funds [3] - Longgao Co. (605086) reported a net inflow of 11.37 million yuan from institutional investors, with a minor net outflow from speculative funds [3] - Lianrui New Materials (688300) had a net inflow of 3.29 million yuan from institutional investors, while speculative funds saw a significant outflow of 28.26 million yuan [3]