Market Overview - The non-metal materials sector experienced a decline of 2.06% on January 13, with Changjiang Materials leading the drop [1] - The Shanghai Composite Index closed at 4138.76, down 0.64%, while the Shenzhen Component Index closed at 14169.4, down 1.37% [1] Stock Performance - Notable stock performances in the non-metal materials sector included: - Bingyang Technology: Closed at 10.69, up 1.42% with a trading volume of 45,000 shares [1] - Qilu Huaxin: Closed at 7.84, up 0.90% with a trading volume of 24,500 shares [1] - Changjiang Materials: Closed at 28.15, down 3.89% with a trading volume of 110,000 shares and a transaction value of 315 million [2] - Longgao Co.: Closed at 47.40, down 1.50% with a trading volume of 58,900 shares and a transaction value of 282 million [2] Capital Flow - The non-metal materials sector saw a net outflow of 189 million from institutional investors, while retail investors had a net inflow of 105 million [2] - The capital flow for specific stocks included: - Kuncai Technology: Net inflow of 743.95 thousand from institutional investors [3] - Longgao Co.: Net outflow of 3004.40 thousand from institutional investors [3] - Strength Diamond: Net inflow of 2396.86 thousand from retail investors [3]