普钢板块12月12日涨0.97%，华菱钢铁领涨，主力资金净流出1763.3万元

Group 1 - The core viewpoint of the article highlights the performance of the steel sector, with a notable increase in the stock prices, particularly led by Hualing Steel [1] - On December 12, the steel sector index rose by 0.97%, while the Shanghai Composite Index closed at 3889.35, up by 0.41%, and the Shenzhen Component Index closed at 13258.33, up by 0.84% [1] - The article provides a summary of the stock price movements within the steel sector, indicating a general upward trend [1] Group 2 - In terms of capital flow, the steel sector experienced a net outflow of 17.63 million yuan from main funds, while retail investors contributed a net inflow of 41.3 million yuan [2] - The article includes a detailed table showing the capital flow for individual stocks within the steel sector [2]