基础化工行业周报：化工板块前三季度盈利同比微增，关注产业政策催化及需求复苏拐点-20251103

Investment Rating - The report rates the industry as "Overweight" [1] Core Viewpoints - The chemical industry is expected to see structural optimization on the supply side, with a focus on selecting resilient and advantageous sectors. Domestic policies frequently emphasize supply-side requirements, while rising raw material costs and capacity shocks in Asia have led to shutdowns and capacity exits among European and American chemical companies. In the short term, geopolitical tensions increase uncertainty in overseas chemical supply, but in the long term, China's chemical industry chain has a clear competitive advantage due to significant cost advantages and continuous technological breakthroughs, which are expected to reshape the global chemical industry landscape [6][15] - The basic chemical sector's profitability showed a slight year-on-year increase in the first three quarters of 2025, with overall revenue up by 2.6% and net profit up by 9.4%. Notable profit growth was seen in pesticides, fluorochemicals, adhesives, and potassium fertilizers, while significant declines were noted in organic silicon, soda ash, nylon, and titanium dioxide [14][15] Summary by Sections Investment Suggestions - Focus on sectors with significant supply elasticity such as organic silicon, membrane materials, chlorine-alkali, and dyes, with key companies including Hoshine Silicon Industry, Xingfa Group, Dongcai Technology, and Zhejiang Longsheng. Additionally, monitor leading companies in sectors with relative advantages, such as Baofeng Energy in coal chemicals and Juhua Co. in fluorochemicals [6][15] Industry Performance - For the week of October 27 to October 31, 2025, the Shanghai and Shenzhen 300 Index fell by 0.43%, while the Shenwan Basic Chemical Index rose by 2.50%, outperforming the market by 2.93%. The top-performing sub-sectors included fluorochemicals and inorganic salts, with increases of 8.40% and 7.68%, respectively [18][19] Price Data Tracking - The top price increases for the week included Vitamin E (up 13.10%), acetone (up 4.88%), and nitric acid (up 3.85%). Conversely, the largest price declines were seen in propylene (down 6.22%) and acrylic acid (down 6.11%) [28][29]