Jin Rong Jie·2025-04-29 08:23Group 1 - The Shanghai Composite Index opened lower and the CSI 300 Chemical Index reported 2064.08 points, with a decline of 7.57% in the last month, 6.98% in the last three months, and 6.77% year-to-date [1] - The CSI 300 Index is categorized into 11 primary industries, 35 secondary industries, over 90 tertiary industries, and more than 200 quaternary industries, providing a comprehensive analysis tool for investors [1] - The top ten weights in the CSI 300 Chemical Index are: Wanhua Chemical (23.08%), Salt Lake Industry (13.6%), Baofeng Energy (7.79%), Juhua Co. (7.6%), Hengli Petrochemical (7.22%), Satellite Chemical (6.88%), Hualu Hengsheng (6.64%), Zangge Mining (6.38%), Longbai Group (6.1%), and Rongsheng Petrochemical (5.49%) [1] Group 2 - In terms of industry composition within the CSI 300 Chemical Index, other chemical raw materials account for 39.09%, polyurethane for 23.08%, potassium fertilizer for 19.98%, fluorochemical for 7.60%, titanium dioxide for 6.10%, and organic silicon for 4.15% [2] - The index sample is adjusted biannually, with adjustments implemented on the next trading day following the second Friday of June and December each year [2] - Weight factors are generally fixed until the next scheduled adjustment, with temporary adjustments made in response to changes in the CSI 300 Index samples or significant events affecting sample companies [2]