基础化工行业周报：长丝供给出现扰动，国际油价震荡下行

Investment Rating - The industry investment rating is maintained at "Overweight" [6][42]. Core Viewpoints - The basic chemical index increased by 4.61% over the past week, outperforming the CSI 300 index by 2.89 percentage points, ranking fifth among all sectors [6][14]. - Key sub-industries with significant gains include coatings and inks (17.56%), potassium fertilizer (9.33%), and food and feed additives (8.64%) [6][14]. - The report highlights a significant drop in international oil prices due to geopolitical easing and fundamental pressures, with WTI crude oil priced at $78.26 per barrel and Brent crude at $82.79 per barrel as of May 10 [7][8]. - The report suggests focusing on several key sectors for investment, including refrigerants, chemical fibers, coal chemicals, tires, and agricultural chemicals, with specific companies recommended for each sector [8][42]. Market Trends - The basic chemical index rose by 4.61% in the past week, while the CSI 300 index increased by 1.72% [14]. - The top five products with the highest weekly price increases were heavy soda ash (6.82%), liquid ammonia (5.67%), ammonium chloride (5.45%), acetic acid (4.92%), and polyester filament POY (3.72%) [18][19]. - Conversely, the top five products with the largest price declines included pyrethroids (-5.83%), potassium chloride (-5.44%), and international sulfur (-5.13%) [20]. Key Stock Dynamics - Notable stocks with significant weekly gains include Meino Biological (63.05%), Baihehua (61.05%), and Qicai Chemical (51.16%) [15][16]. - Stocks with the largest declines included Yinhai Technology (-10.98%), Baisimei (-10.71%), and Annuoqi (-10.29%) [17]. Chemical Price Trends - The report provides a detailed analysis of chemical price movements, indicating a general upward trend in several key products while noting declines in others [18][20]. - The price differences for various chemicals also show significant fluctuations, with DMF price difference increasing by 105.58% [30]. Investment Recommendations - The report recommends focusing on the refrigerant sector, chemical fiber sector, coal chemical sector, tire sector, agricultural chemical sector, and high-quality growth stocks, with specific companies highlighted for each category [8][42].