装修建材板块1月8日涨1.84%，开尔新材领涨，主力资金净流入1.45亿元

Group 1 - The renovation and building materials sector increased by 1.84% on January 8, with Kai'er New Materials leading the gains [1] - The Shanghai Composite Index closed at 4082.98, down 0.07%, while the Shenzhen Component Index closed at 13959.48, down 0.51% [1] - Key stocks in the renovation and building materials sector showed significant price increases, with Kai'er New Materials rising by 9.06% to a closing price of 5.78 [1] Group 2 - The sector saw a net inflow of 145 million yuan from institutional investors, while retail investors experienced a net outflow of 170 million yuan [2] - Among the stocks, Dongfang Yuhong had a net inflow of 1.50 million yuan from institutional investors, but a net outflow of 22.04 million yuan from retail investors [3] - The overall trading volume for the renovation and building materials sector was substantial, with notable transactions including Kai'er New Materials and Xiongshu Technology [1][2]