装修建材板块8月29日跌0.17%，海螺新材领跌，主力资金净流出1.37亿元

Market Overview - The renovation and building materials sector experienced a decline of 0.17% on August 29, with Conch New Materials leading the drop [1] - The Shanghai Composite Index closed at 3857.93, up 0.37%, while the Shenzhen Component Index closed at 12696.15, up 0.99% [1] Stock Performance - Notable gainers in the renovation and building materials sector included: - Fangda Group: Closed at 4.47, up 4.20% with a trading volume of 507,300 shares and a turnover of 223 million yuan - Xiong Plastic Technology: Closed at 8.04, up 2.29% with a trading volume of 90,000 shares and a turnover of 70.91 million yuan - Donghe New Materials: Closed at 13.60, up 1.80% with a trading volume of 27,700 shares and a turnover of 37.74 million yuan [1] - Conversely, Conch New Materials saw a significant decline, closing at 6.01, down 6.68% with a trading volume of 261,500 shares and a turnover of 160 million yuan [2] Capital Flow - The renovation and building materials sector experienced a net outflow of 137 million yuan from institutional investors, while retail investors saw a net inflow of 50.80 million yuan [2] - Key stocks with notable capital flows included: - Fangda Group: Net inflow of 31.71 million yuan from institutional investors, with a net outflow of 32.82 million yuan from retail investors [3] - Rabbit Baby: Net inflow of 22.28 million yuan from institutional investors, with net outflows from both retail and speculative investors [3] - Zhongtie Assembly: Net inflow of 19.60 million yuan from institutional investors, with net outflows from retail investors [3]