Market Overview - The non-metal materials sector experienced a decline of 0.46% on December 2, with Ningxin New Materials leading the drop [1] - The Shanghai Composite Index closed at 3897.71, down 0.42%, while the Shenzhen Component Index closed at 13056.7, down 0.68% [1] Stock Performance - Longgao Co., Ltd. (605086) saw a significant increase of 9.35%, closing at 40.35 with a trading volume of 102,400 shares and a transaction value of 396 million [1] - Jiangsu Materials (001296) increased by 1.16%, closing at 27.05 with a trading volume of 150,400 shares and a transaction value of 402 million [1] - Other notable declines included Ningxin New Materials (920719) down 2.58% to 12.85, and Lianrui New Materials (688300) down 1.09% to 56.21 [2] Capital Flow Analysis - The non-metal materials sector saw a net outflow of 29.69 million from main funds, while retail investors contributed a net inflow of 37.43 million [2] - The main funds showed a significant outflow from stocks like Ningxin New Materials, which had a net outflow of 4.70 million, representing 14.27% of its trading volume [3] - Retail investors showed a positive net inflow in stocks like Quartz Co. (603688), which had a net inflow of 11.10 million, accounting for 7.12% of its trading volume [3]