化学制品板块8月22日涨0.83%，雪峰科技领涨，主力资金净流出5.81亿元

Group 1 - The chemical products sector increased by 0.83% on August 22, with Xuefeng Technology leading the gains [1] - The Shanghai Composite Index closed at 3825.76, up 1.45%, while the Shenzhen Component Index closed at 12166.06, up 2.07% [1] - Notable stock performances included Xuefeng Technology with a closing price of 9.79, up 10.00%, and ST Quantai with a closing price of 5.15, up 9.11% [1] Group 2 - The chemical products sector experienced a net outflow of 581 million yuan from main funds, while retail investors saw a net inflow of 684 million yuan [3] - The overall market sentiment showed a mixed trend with institutional investors withdrawing funds while retail investors increased their participation [3]