装修建材板块12月30日跌0.65%，扬子新材领跌，主力资金净流出6965.19万元

Market Overview - The renovation and building materials sector declined by 0.65% compared to the previous trading day, with Yangzi New Materials leading the decline [1] - The Shanghai Composite Index closed at 3965.12, down 0.0%, while the Shenzhen Component Index closed at 13604.07, up 0.49% [1] Stock Performance - Notable gainers in the renovation and building materials sector included: - Wanli Stone (002785) with a closing price of 37.00, up 3.67% and a trading volume of 85,800 shares [1] - Yashi Chuangneng (603378) with a closing price of 6.76, up 3.05% and a trading volume of 113,500 shares [1] - Jingxue Shieneng (301010) with a closing price of 23.04, up 2.77% and a trading volume of 78,200 shares [1] - Yangzi New Materials (002652) experienced the largest decline, closing at 4.37, down 10.08% with a trading volume of 238,700 shares [2] Capital Flow - The renovation and building materials sector saw a net outflow of 69.65 million yuan from institutional investors, while retail investors experienced a net inflow of 69.71 million yuan [2] - The detailed capital flow for selected stocks showed: - Keshun Co., Ltd. (300737) had a net inflow of 14.80 million yuan from institutional investors [3] - Huali Co., Ltd. (603038) had a net inflow of 14.79 million yuan from institutional investors [3] - Wanli Stone (002785) had a net inflow of 12.79 million yuan from institutional investors [3]