化工行业周报：异丁醛、TDI价格涨幅居前，建议关注Q2业绩环比有望高增的标的-20250707

Investment Rating - The report maintains a recommendation for the chemical industry, indicating a positive outlook for the sector [5]. Core Insights - The report highlights significant price increases in isobutyraldehyde and TDI, suggesting potential high growth in Q2 performance for specific companies [4]. - The overall chemical sector saw a 0.80% increase in the first week of July, lagging behind the Shanghai Composite Index by 0.60 percentage points [13]. - The dynamic PE for the chemical sector is reported at 24.98 times, which is lower than the average PE of 33.31 times since 2015 [13]. Industry Performance - In the first week of July, 24 sub-industries within the chemical sector experienced growth, with the top five performers being fiberglass (+17%), compound fertilizers (+3.2%), other plastic products (+3.08%), fluorochemicals and refrigerants (+2.97%), and tires (+2.66%) [17]. - Conversely, seven sub-industries declined, with synthetic leather (-4%), petroleum trading (-2.19%), inorganic salts (-1.91%), petroleum processing (-0.57%), and textile chemicals (-0.54%) being the worst performers [17]. Price and Spread Trends - The report lists the top five products with the highest weekly price increases: dichloropropane-white (+8.82%), isobutyraldehyde (+7.2%), TDI (+7.02%), butanone (+6.39%), and sulfur iron ore (+3.82%) [23]. - The top five products with the largest price declines include liquid chlorine (-86.51%), aniline (-7.67%), acetone (-6.69%), propylene oxide (-6.53%), and niacinamide (-6.35%) [23]. - Among the 75 products analyzed for price spreads, the top five with the highest increases were DMF spread (+24.73%), soft foam polyether spread (+21.54%), acetone hydrogenation isopropanol spread (+17.26%), polybutadiene rubber spread (+16.69%), and hard foam polyether spread (+14.62%) [42]. Inventory Changes - Significant inventory changes were noted, with polyester filament increasing by 36.09%, while other notable changes included a decrease in the inventory of chlorpyrifos (-19.05%) and an increase in ethylene glycol (+15.61%) [60]. Recommended Companies - The report suggests focusing on companies expected to see substantial quarter-over-quarter growth in Q2, specifically mentioning Zhongchumai, Sully Co., and Haigong Coatings, as well as Guangxin Materials, which is anticipated to pass certification [4].