装修建材板块9月19日涨1.78%，万里石领涨，主力资金净流入3637.72万元

Group 1 - The core viewpoint of the news is that the renovation and building materials sector experienced a rise of 1.78% on September 19, with Wanli Stone leading the gains [1] - On the same day, the Shanghai Composite Index closed at 3820.09, down 0.3%, while the Shenzhen Component Index closed at 13070.86, down 0.04% [1] - The individual stock performance within the renovation and building materials sector is detailed in a table [1] Group 2 - In terms of capital flow, the renovation and building materials sector saw a net inflow of 36.38 million yuan from main funds, while speculative funds had a net inflow of 53.09 million yuan [2] - Conversely, retail investors experienced a net outflow of 89.47 million yuan [2] - A table detailing the capital flow for individual stocks in the renovation and building materials sector is provided [2]