水泥板块1月9日跌0.5%，三和管桩领跌，主力资金净流出1.75亿元

Group 1 - The cement sector experienced a decline of 0.5% on January 9, with Sanhe Pile leading the drop [1] - The Shanghai Composite Index closed at 4120.43, up 0.92%, while the Shenzhen Component Index closed at 14120.15, up 1.15% [1] - Key stocks in the cement sector showed varied performance, with Sifang New Material rising by 1.42% and Sanhe Pile falling by 5.78% [1][2] Group 2 - The cement sector saw a net outflow of 175 million yuan from major funds, while retail investors contributed a net inflow of 218 million yuan [2] - Major funds showed a negative net flow in several stocks, including Conch Cement with a net outflow of 29.21 million yuan [3] - Retail investors had a positive net flow in stocks like Tapa Group, indicating differing investor sentiment across the sector [3]