化工行业周报：维生素价格大涨，龙佰集团与四川资源集团签订战略合作框架协议

Investment Rating - The report maintains a "Positive" investment rating for the chemical industry [1]. Core Insights - The market composite index has shown an upward trend, with the Shanghai Composite Index closing at 2905.34, up by 0.50% for the week. The chemical sector also saw a slight increase of 0.43% [7][8]. - Significant price increases were observed in vitamins, particularly Vitamin A and E, due to supply disruptions from BASF. Vitamin A's average market price rose to 175 CNY/kg, a 90.22% increase, while Vitamin E reached 125 CNY/kg, up by 34.41% [18][20]. - The report highlights the strategic cooperation between Longbai Group and Sichuan Resources Group, indicating potential growth opportunities in the sector [2]. Market Performance Overview - The top five performing stocks in the chemical sector for the week included Jiangtian Chemical (+24.54%), Jianxin Co. (+17.22%), and Weilan Bio (+14.97). Conversely, the worst performers were Beisimei (-18.27%) and Wanhua Chemical (-6.70%) [12][14]. - The chemical products with the highest price increases included Vitamin A, Vitamin E, and isobutyraldehyde, while liquid gas and methyltrichlorosilane saw significant declines [18][19][22]. Chemical Sector Analysis - The chemical sector's sub-segments showed varied performance, with viscose (+6.73%) and coatings (+4.58%) leading the gains, while polyurethane (-6.01%) and coal chemicals faced declines [9][10]. - The report emphasizes the importance of domestic substitution in high-end optical materials, suggesting investment in companies like Stik and Dongcai Technology, which are positioned to benefit from this trend [3]. Price Movements - The report notes that crude oil prices fell by 0.71% during the week, impacting the overall chemical market dynamics [15]. - Key chemical products experienced notable price fluctuations, with pure MDI increasing by 4.47% to 18700 CNY/ton, while lithium carbonate saw a significant drop of 4.97% [23].