农化制品板块2月3日涨3.97%，宏达股份领涨，主力资金净流入6.81亿元

Group 1 - The agricultural chemical sector experienced a significant increase of 3.97% on February 3, with Hongda Co., Ltd. leading the gains [1] - The Shanghai Composite Index closed at 4067.74, up by 1.29%, while the Shenzhen Component Index closed at 14127.1, up by 2.19% [1] - Key stocks in the agricultural chemical sector showed notable price increases, with Hongda Co., Ltd. rising by 9.16% to a closing price of 15.97 [1] Group 2 - The agricultural chemical sector saw a net inflow of 681 million yuan from main funds, while retail investors experienced a net outflow of 319 million yuan [2] - The stock Salt Lake Co., Ltd. had a main fund net inflow of 315 million yuan, representing 9.40% of its trading volume [3] - Hualu Hengsheng had a main fund net inflow of 168 million yuan, accounting for 11.82% of its trading volume [3]