装修建材板块9月3日跌1.44%，科创新材领跌，主力资金净流出2.46亿元

Market Overview - The renovation and building materials sector declined by 1.44% on September 3, with Kexin New Materials leading the drop [1] - The Shanghai Composite Index closed at 3813.56, down 1.16%, while the Shenzhen Component Index closed at 12472.0, down 0.65% [1] Stock Performance - Notable stock performances included: - Sankeshu (603737) closed at 47.16, up 1.16% with a trading volume of 61,700 shares and a turnover of 290 million yuan [1] - ST Nachuan (300198) closed at 2.36, down 0.42% with a trading volume of 148,000 shares [1] - Kexin New Materials (833580) closed at 16.95, down 8.33% with a trading volume of 107,000 shares and a turnover of 185 million yuan [2] Capital Flow - The renovation and building materials sector experienced a net outflow of 246 million yuan from institutional investors, while retail investors saw a net inflow of 192 million yuan [2] - The capital flow for specific stocks showed: - Fangda Group (000055) had a net outflow of 6.29 million yuan from institutional investors [3] - Rabbit Baby (002043) had a net inflow of 5.28 million yuan from institutional investors [3] - Public Company (002641) had a net inflow of 3.37 million yuan from institutional investors [3]