化学原料板块10月21日涨0.94%，振华股份领涨，主力资金净流出2.05亿元

Group 1 - The chemical raw materials sector increased by 0.94% compared to the previous trading day, with Zhihua Co. leading the gains [1] - The Shanghai Composite Index closed at 3916.33, up 1.36%, while the Shenzhen Component Index closed at 13077.32, up 2.06% [1] Group 2 - In terms of capital flow, the chemical raw materials sector experienced a net outflow of 205 million yuan from main funds, while retail investors saw a net inflow of 232 million yuan [2] - The table provided shows the net inflow and outflow of various stocks within the sector, highlighting significant movements in individual stocks such as Ti'an Co. and Shilong Industry [2]