Market Overview - The Shanghai Composite Index fell by 0.01% on January 20, with 20 industries experiencing gains, led by the oil and petrochemical sector and construction materials, which rose by 1.74% and 1.71% respectively [1] - The telecommunications and defense industries saw the largest declines, with drops of 3.23% and 2.87% respectively [1] - Overall, there was a net outflow of 95.72 billion yuan in the main funds across the two markets, with 11 industries seeing net inflows [1] Fund Flow Analysis - The banking sector had the highest net inflow of funds, totaling 1.472 billion yuan, and increased by 0.80% [1] - The real estate sector followed with a 1.55% increase and a net inflow of 627 million yuan [1] - The power equipment sector experienced the largest net outflow, with 19.054 billion yuan, followed by the electronics sector with an outflow of 18.394 billion yuan [1] Construction Materials Sector - The construction materials industry rose by 1.71% with a net inflow of 256 million yuan, comprising 71 stocks, of which 48 increased and 22 decreased [2] - Notable stocks with significant net inflows included Jiuding New Materials with 348 million yuan, Anhui Conch Cement with 229 million yuan, and Tibet Tianlu with 141 million yuan [2] - Stocks with the largest net outflows included Zais Technology and China National Materials, each with outflows of 134 million yuan [2] Key Stocks in Construction Materials - Jiuding New Materials: +10.02% with a turnover rate of 32.18% and a net fund flow of 348.14 million yuan [2] - Anhui Conch Cement: +5.74% with a turnover rate of 2.82% and a net fund flow of 228.75 million yuan [2] - Tibet Tianlu: +3.96% with a turnover rate of 9.91% and a net fund flow of 141.07 million yuan [2]