非金属材料板块1月19日跌0.69%，坤彩科技领跌，主力资金净流出1.41亿元

Market Overview - The non-metal materials sector experienced a decline of 0.69% on January 19, with Kuncai Technology leading the drop [1] - The Shanghai Composite Index closed at 4114.0, up 0.29%, while the Shenzhen Component Index closed at 14294.05, up 0.09% [1] Stock Performance - Jiangsu Materials (001296) saw a closing price of 28.80, with a rise of 3.60% and a trading volume of 84,700 shares, totaling 242 million yuan [1] - Suotong Development (603612) closed at 26.02, up 2.40%, with a trading volume of 160,500 shares, amounting to 415 million yuan [1] - Kuncai Technology (603826) closed at 16.92, down 3.31%, with a trading volume of 82,500 shares, totaling 140 million yuan [2] - Quartz Shares (603688) closed at 39.68, down 1.73%, with a trading volume of 119,000 shares, amounting to 475 million yuan [2] Capital Flow - The non-metal materials sector saw a net outflow of 141 million yuan from institutional investors, while retail investors had a net inflow of 151 million yuan [2] - The capital flow for individual stocks indicates that Jiangsu Materials had a net inflow of 5.67 million yuan from institutional investors [3] - Kuncai Technology experienced a significant net outflow of 14.96 million yuan from institutional investors, while retail investors contributed a net inflow of 8.71 million yuan [3]