证券研究报告 基础化工周报：主流厂商挺价意愿强，维生素E价格回升 大化工首席分析师：陈淑娴，CFA 执业证书编号：S0600523020004 联系方式：chensx@dwzq.com.cn 石化化工分析师：周少玟 执业证书编号：S0600525070005 联系方式：zhoushm@dwzq.com.cn 2026年2月8日 请务必阅读正文之后的免责声明部分 投资要点 2 ◼ 【聚氨酯板块】本周纯MDI/聚合MDI/TDI行业均价为17500/13900/14377元/吨，环比分别-43/+36/+292元/吨，纯MDI/聚 合MDI/TDI行业毛利分别为4097/1497/2345元/吨，环比分别-75/+4/+74元/吨。 ◼ 【油煤气烯烃板块】 ①本周乙烷/丙烷/动力煤/石脑油均价分别为1277/4399/520/4137元/吨，环比分别-139/+51/+0/+63元 /吨。②本周聚乙烯均价为7167元/吨，环比+5元/吨，乙烷裂解/CTO/石脑油裂解制聚乙烯理论利润分别为847/1444/-305元/ 吨，环比分别+140/+5/-60元/吨。③本周聚丙烯均价为6600元/吨，环比+50元/吨，P ...

Investment Rating - The industry investment rating is "Overweight," indicating an expected outperformance of the industry index relative to the benchmark by more than 5% over the next six months [66]. Core Insights - The report highlights strong price support from factories, with solid methionine prices rebounding [1]. - The average prices for various chemical products are provided, showing fluctuations in pricing and profitability across different segments [2]. - The report identifies key listed companies in the chemical sector, including Wanhua Chemical, Baofeng Energy, and others [2]. Summary by Sections 2.1 Basic Chemical Index Trends - The report includes a weekly overview of the basic chemical index trends, indicating overall market movements [10]. 2.2 Polyurethane Sector - The average prices for pure MDI, polymer MDI, and TDI are reported as 17,543, 13,864, and 14,085 CNY/ton respectively, with changes of -171, -36, and +110 CNY/ton [2]. - The gross margins for these products are 4,171, 1,493, and 2,363 CNY/ton, reflecting changes of -332, -196, and -15 CNY/ton [2]. 2.3 Oil, Coal, and Olefin Sector - Average prices for ethane, propane, thermal coal, and naphtha are reported as 1,416, 4,349, 520, and 4,074 CNY/ton respectively, with increases of +147, +52, +0, and +171 CNY/ton [2]. - The average price for polyethylene is 7,162 CNY/ton, showing a rise of +62 CNY/ton [2]. - The theoretical profits for ethane cracking, CTO, and naphtha cracking for polyethylene production are reported as 694, 1,438, and -245 CNY/ton, with respective changes of -161, +41, and -127 CNY/ton [2]. 2.4 Coal Chemical Sector - Average prices for synthetic ammonia, urea, DMF, and acetic acid are 2,184, 1,745, 3,962, and 2,579 CNY/ton respectively, with changes of -27, +5, +68, and -21 CNY/ton [2]. - The gross margins for these products are 199, 72, -92, and 445 CNY/ton, reflecting changes of -21, +1, +10, and -8 CNY/ton [2]. 2.5 Animal Nutrition Sector - Average prices for VA, VE, solid methionine, and liquid methionine are reported as 61.5, 55.1, 17.9, and 14.2 CNY/kg respectively, with changes of -0.7, +0.6, +0.3, and +0.0 CNY/kg [2].

Investment Rating - The industry investment rating is "Overweight," indicating an expected outperformance of the industry index relative to the benchmark by more than 5% over the next six months [67]. Core Insights - The report highlights significant price fluctuations in the chemical sector due to extreme weather conditions affecting natural gas prices in the U.S. [1]. - The average prices for various chemical products, including pure MDI, polymer MDI, and TDI, have shown a decline compared to the previous week, with respective price changes of -129, -114, and -213 CNY/ton [2]. - The report provides a detailed analysis of profit margins across different segments, indicating a decrease in margins for pure MDI and polymer MDI, while TDI margins remained relatively stable [2]. Summary by Sections 2.1 Basic Chemical Index Trends - The basic chemical index has shown a weekly increase of 7.3% as of January 23, 2026, with a year-to-date increase of 16.8% [8]. 2.2 Polyurethane Sector - The average prices for pure MDI, polymer MDI, and TDI are reported at 17,714, 13,900, and 13,975 CNY/ton respectively, with corresponding profit margins of 4,503, 1,689, and 2,459 CNY/ton [2][16]. 2.3 Oil, Coal, and Olefin Sector - Ethane and propane prices have increased by 210 and 21 CNY/ton respectively, while the average price for coal remains stable at 520 CNY/ton [2][22]. - The average price for polyethylene is reported at 7,100 CNY/ton, showing a slight decrease of 15 CNY/ton [2][28]. 2.4 Coal Chemical Sector - The average prices for synthetic ammonia, urea, DMF, and acetic acid are 2,211, 1,740, 3,894, and 2,600 CNY/ton respectively, with minor fluctuations in profit margins [2][41]. 2.5 Animal Nutrition Sector - The average prices for VA, VE, solid egg, and liquid egg are reported at 62.2, 54.5, 17.6, and 14.2 CNY/kg respectively, with minimal changes observed [2][54].

Report Summary 1. Report Industry Investment Rating No information provided in the content. 2. Core Viewpoints of the Report - This week, the average prices of pure MDI, polymerized MDI, and TDI in the polyurethane industry were 17,843 yuan/ton, 14,014 yuan/ton, and 14,188 yuan/ton respectively, with week - on - week decreases of 200 yuan/ton, 157 yuan/ton, and 290 yuan/ton. Their respective gross profits also declined [2]. - In the oil - gas - olefin sector, prices of raw materials such as ethane, propane, etc. had different changes this week. The average prices of polyethylene and polypropylene increased, and the theoretical profits of different production routes also changed accordingly [2]. - In the coal - chemical industry, the average prices of synthetic ammonia, urea, DMF, and acetic acid had slight fluctuations, and their gross profits also changed slightly [2]. - In the animal nutrition products sector, the average prices of VA, VE, solid methionine, and liquid methionine had minor changes this week [2]. 3. Summary by Relevant Catalogs 1. Basic Chemical Weekly Data Briefing - **Related Company Performance Tracking** - The Basic Chemical Index had a weekly increase of 0.9%, a monthly increase of 12.3%, a quarterly increase of 12.9%, an annual increase of 44.7%, and a year - to - date increase of 6.0% as of 2026/1/16. Different chemical companies had different performance in terms of stock price changes and earnings. For example, Wanhua Chemical's stock price decreased by 0.8% this week, while Baofeng Energy's increased by 5.2% [8]. - The report also provided data on the total market value, net profit attributable to the parent company, PE, and PB of relevant companies from 2024A to 2027E [8]. - **Industry Chain Data** - **Polyurethane Industry Chain**: The average prices and gross profits of pure MDI, polymerized MDI, and TDI decreased this week. Their respective seven - year quantiles were 51%, 45%, and 65% for prices, and 71%, 49%, and 71% for gross profits [8]. - **Oil - Gas - Olefin Industry Chain**: - **Raw Material Prices**: The average prices of ethane, propane, NYMEX natural gas, Brent crude oil, and naphtha had different changes. Their ten - year quantiles also varied [8]. - **Profit Comparison of Different Routes**: The single - ton profits of different production routes for polyethylene and polypropylene had different changes compared to the previous week, the beginning of the year, and the same period last year [8]. - **C2 and C3 Plates**: The average prices and price differences between products and raw materials in the C2 and C3 plates had different changes, with different ten - year quantiles. For example, the price of ethylene decreased by 90 yuan/ton, and the price difference between HDPE and ethylene increased by 353 yuan/ton [10]. - **Coal - Chemical Industry Chain**: - **Coal - Coke Products**: The average prices of coking coal and coke decreased, and the gross profit of coke was - 47 yuan/ton, with a 3 - yuan decrease [10]. - **Traditional Coal - Chemical Products**: The average prices and gross profits of synthetic ammonia, methanol, urea, DMF, and acetic acid had different changes, with different seven - year quantiles [10]. - **New Materials**: The average prices and gross profits of DMC, oxalic acid, octanol, adipic acid, caprolactam, PA6, and PA66 had different changes, with different seven - year quantiles [10]. - **Animal Nutrition Products Industry Chain**: The average prices of VA, VE, solid methionine, and liquid methionine changed slightly, with different ten - year quantiles [10]. 2. Basic Chemical Weekly Report - **2.1 Basic Chemical Index Trends**: The report did not provide specific content in the text, only the title. - **2.2 Polyurethane Sector**: The report presented the price trends of pure MDI, polymerized MDI, and TDI in China, as well as their price - spread situations [16][18][20]. - **2.3 Oil - Gas - Olefin Sector**: It showed the price trends of raw materials such as MB ethane, NYMEX natural gas, East China propane, Brent crude oil, domestic steam coal, and naphtha, and the profit situations of different production routes for polyethylene and polypropylene [24][27][29]. - **2.4 Coal - Chemical Sector**: The report presented the price trends and gross profit situations of coal - coke products, traditional coal - chemical products, and new materials in the coal - chemical industry [40][46][51]. - **2.5 Animal Nutrition Products Sector**: It showed the price trends of VA, VE, solid methionine, and liquid methionine [55][59][61].

Investment Rating - The industry investment rating is "Overweight," indicating an expected outperformance of the industry index relative to the benchmark by more than 5% over the next six months [70]. Core Insights - The average prices for pure MDI, polymer MDI, and TDI are reported at 18,043, 14,171, and 14,478 CNY/ton respectively, with TDI showing a week-on-week increase of 59 CNY/ton [2]. - The average prices for ethane, propane, and coal are 1,165, 4,172, and 520 CNY/ton respectively, with ethane decreasing by 85 CNY/ton and propane increasing by 45 CNY/ton [2]. - The average prices for synthetic ammonia, urea, DMF, and acetic acid are 2,213, 1,724, 3,787, and 2,546 CNY/ton respectively, with synthetic ammonia decreasing by 34 CNY/ton and urea increasing by 12 CNY/ton [2]. - The average prices for animal nutrition products such as VA and VE are 62.5 and 54.9 CNY/kg respectively, with no significant changes [2]. Summary by Sections Polyurethane Sector - The average prices for pure MDI, polymer MDI, and TDI are 18,043, 14,171, and 14,478 CNY/ton respectively, with TDI showing a week-on-week increase of 59 CNY/ton [2][16][20]. Oil, Coal, and Olefins Sector - Ethane and propane average prices are 1,165 and 4,172 CNY/ton respectively, with ethane decreasing by 85 CNY/ton and propane increasing by 45 CNY/ton [2][24][31]. - The average price for polyethylene is 6,800 CNY/ton, reflecting a week-on-week increase of 30 CNY/ton [2]. Coal Chemical Sector - The average prices for synthetic ammonia, urea, DMF, and acetic acid are 2,213, 1,724, 3,787, and 2,546 CNY/ton respectively, with synthetic ammonia decreasing by 34 CNY/ton and urea increasing by 12 CNY/ton [2][40][48][49]. Animal Nutrition Sector - The average prices for VA, VE, solid egg amino acid, and liquid egg amino acid are 62.5, 54.9, 17.6, and 14.2 CNY/kg respectively, with no significant changes [2][56][62].

Investment Rating - The industry investment rating is "Overweight," indicating an expected outperformance of the industry index relative to the benchmark by more than 5% in the next six months [74]. Core Insights - The report highlights a rebound in prices for Vitamin A (VA) and Vitamin E (VE), with VA priced at 62.6 yuan/kg and VE at 49.5 yuan/kg, reflecting increases of 0.9 yuan/kg and 6.0 yuan/kg respectively [10][59][63]. - The polyurethane sector shows varied price movements, with pure MDI averaging 18,414 yuan/ton (+214 yuan/ton), polymer MDI at 14,293 yuan/ton (+7 yuan/ton), and TDI at 13,341 yuan/ton (-108 yuan/ton) [2][16]. - In the oil, coal, and gas olefin sector, ethane and propane prices are reported at 1,296 yuan/ton (-68 yuan/ton) and 3,934 yuan/ton (+157 yuan/ton) respectively, while the average price of polypropylene is 6,600 yuan/ton (-80 yuan/ton) [2][24]. - The coal chemical sector shows mixed results, with synthetic ammonia at 2,151 yuan/ton (-3 yuan/ton) and urea at 1,615 yuan/ton (+19 yuan/ton) [2][40]. - Key listed companies in the chemical sector include Wanhua Chemical, Baofeng Energy, Satellite Chemical, Hualu Hengsheng, New Chemical, and Andisu [2]. Summary by Sections 1. Polyurethane Sector - Average prices for pure MDI, polymer MDI, and TDI are 18,414 yuan/ton, 14,293 yuan/ton, and 13,341 yuan/ton respectively, with corresponding gross profits of 5,400 yuan/ton, 2,279 yuan/ton, and 1,918 yuan/ton [2][16]. 2. Oil, Coal, and Gas Olefin Sector - Ethane and propane average prices are 1,296 yuan/ton and 3,934 yuan/ton, with theoretical profits for polyethylene production from ethane at 947 yuan/ton [2][24][33]. 3. Coal Chemical Sector - Average prices for synthetic ammonia, urea, DMF, and acetic acid are 2,151 yuan/ton, 1,615 yuan/ton, 3,943 yuan/ton, and 2,330 yuan/ton respectively, with gross profits of 121 yuan/ton, -69 yuan/ton, -151 yuan/ton, and 80 yuan/ton [2][40][44]. 4. Animal Nutrition Sector - VA and VE prices are reported at 62.6 yuan/kg and 49.5 yuan/kg, with recent increases noted [10][59][63].

Core Viewpoint - The company reported a revenue of 16.642 billion yuan for Q3 2025, a year-on-year increase of 5%, and a net profit attributable to shareholders of 5.321 billion yuan, a year-on-year increase of 33% [1] Group 1: Financial Performance - In Q3 2025, the company achieved a revenue of 5.541 billion yuan, a year-on-year decrease of 7%, and a net profit attributable to shareholders of 1.717 billion yuan, a year-on-year decrease of 4% [1] - The gross profit margin for Q3 2025 was 44.8%, an increase of 1 percentage point year-on-year, remaining stable compared to the previous quarter [1] - The expense ratio (including four expenses and taxes) was 10.6%, an increase of 0.4 percentage points year-on-year and 2.9 percentage points quarter-on-quarter [1] Group 2: Product Pricing and Market Dynamics - The prices for the company's main products, including VA/VE/solid amino acids, were 63/64/22 yuan/kg, showing year-on-year decreases of 67%/49% and an increase of 8% for solid amino acids, with a quarter-on-quarter decrease of 14%/38% and stability for solid amino acids [1] - The strong performance in methionine prices and record-high exports in Q3 were noted, with domestic methionine exports increasing by 52% year-on-year to nearly 70,000 tons, and imports rising by 10% year-on-year to 43,000 tons [1] Group 3: Future Growth Prospects - The company is collaborating with Sinopec to build an 180,000 tons/year liquid methionine project, which is nearing completion, indicating potential short-term growth [2] - The flavor and fragrance segment has initiated a new product layout on approximately 1,000 acres in Shandong, while the new materials segment is advancing its PPS expansion project and large-scale HA production [2] - Future product categories will expand from nutritional products and amino acids to include fragrances and new materials, with ongoing developments at the Heilongjiang base [2] Group 4: Investment Outlook - The company is expected to achieve net profits attributable to shareholders of 6.52 billion yuan, 6.9 billion yuan, and 7.7 billion yuan for the years 2025-2027 [3] - The investment rating is maintained at "recommended" [3]

Investment Rating - The investment rating for the company is "Buy" and is maintained [4] Core Insights - The company's resilience in the nutrition sector is highlighted, with Q3 performance exceeding expectations. For the first three quarters of 2025, revenue reached 16.642 billion yuan, a year-on-year increase of 5.45%, while net profit attributable to shareholders was 5.321 billion yuan, up 33.37% year-on-year. However, Q3 revenue was 5.541 billion yuan, down 6.66% year-on-year and 2.11% quarter-on-quarter, with net profit at 1.717 billion yuan, down 3.80% year-on-year and 0.35% quarter-on-quarter [1][2] Summary by Sections Revenue and Profitability - In Q3 2025, the average prices for key products such as VA, VE, VC, and methionine were 63.3, 64.3, 19.2, and 22.3 yuan per kilogram, showing significant year-on-year declines of -67.4%, -48.7%, -27.5%, and an increase of +7.9% respectively. Despite the price drops, the company's gross margin was 44.86%, up 1.3 percentage points year-on-year, indicating strong profitability [2] Market Demand and Supply - The demand for methionine is expected to remain robust, with a projected global market growth of around 6% annually, translating to an increase of over 100,000 tons per year. The company plans to expand its solid methionine production capacity by 70,000 tons and has initiated trial production of an 180,000 tons/year liquid methionine project [3] Earnings Forecast and Valuation - The forecast for net profit attributable to shareholders for 2025-2027 is 6.61 billion, 7.04 billion, and 8.10 billion yuan respectively, with corresponding EPS of 2.15, 2.29, and 2.64 yuan. The current price corresponds to P/E ratios of 10.86, 10.20, and 8.86 for the respective years [4]

Investment Rating - The investment rating for the company is "Outperform the Market" (maintained) [1][6][18] Core Views - The company has demonstrated strong resilience in its third-quarter performance, with a notable increase in net profit despite a decline in revenue [1][8] - The production of liquid methionine has successfully commenced, contributing to the company's growth potential [4][12] - The company is expected to benefit from the rising prices of methionine and the expansion of its production capacity, positioning it as a global leader in the industry [4][12] Financial Performance - For the first three quarters of 2025, the company achieved revenue of 16,642 million yuan, a year-on-year increase of 5.45%, and a net profit of 5,321 million yuan, up 33.37% year-on-year [8] - The sales gross margin was 45.55%, and the net profit margin was 31.97%, indicating strong profitability [8] - In the third quarter alone, the company reported revenue of 5,541 million yuan, a year-on-year decrease of 6.66%, and a net profit of 1,717 million yuan, down 3.80% year-on-year [8] Methionine Production and Market Trends - The solid methionine market price reached 20,800 yuan per ton, with a year-to-date increase of 5.85% [4][12] - The company is expanding its methionine production capacity to 460,000 tons per year, which will rank it third globally [4][12] - The methionine industry has seen a significant increase in demand and prices since 2024, providing strong support for the company's revenue growth [4][12] Vitamin Business Performance - The prices of VA and VE have declined significantly, but the company's profitability remains stable, with a net profit margin of 58.00% for its vitamin subsidiary [5][16] - The company expects the vitamin business to maintain a steady profit level despite recent price fluctuations [5][16] Investment Recommendations - The report maintains the "Outperform the Market" rating, highlighting the company's strong operational performance and growth potential across various business segments [6][18] - The projected net profits for 2025-2027 are 6,792 million, 7,248 million, and 7,737 million yuan, respectively, with corresponding PE ratios of 10.6, 9.9, and 9.3 times [6][18]

Investment Rating - The industry investment rating is "Overweight," indicating an expected outperformance of the industry index relative to the benchmark by more than 5% over the next six months [76]. Core Insights - The polyurethane sector shows mixed price movements with pure MDI averaging 17,914 CNY/ton (+336 CNY/ton), polymer MDI at 14,493 CNY/ton (-293 CNY/ton), and TDI at 13,315 CNY/ton (-150 CNY/ton) [2]. - In the oil, coal, and gas olefin sector, ethane and propane prices decreased, while coal remained stable. Ethylene averaged 5,580 CNY/ton (-124 CNY/ton) and polypropylene remained unchanged at 6,800 CNY/ton [10]. - The coal chemical sector saw slight increases in synthetic ammonia and acetic acid prices, with synthetic ammonia at 2,175 CNY/ton (+3 CNY/ton) and acetic acid at 2,430 CNY/ton (+15 CNY/ton) [10]. Summary by Sections 1. Polyurethane Sector - Average prices for pure MDI, polymer MDI, and TDI are 17,914 CNY/ton, 14,493 CNY/ton, and 13,315 CNY/ton respectively, with corresponding gross profits of 4,716 CNY/ton, 2,295 CNY/ton, and 2,106 CNY/ton [2][17][20]. 2. Oil, Coal, and Gas Olefin Sector - Ethane and propane prices are 1,343 CNY/ton (-130 CNY/ton) and 3,763 CNY/ton (-46 CNY/ton) respectively. Ethylene's theoretical profit from ethane cracking is 949 CNY/ton (+39 CNY/ton) [2][10][34]. 3. Coal Chemical Sector - Average prices for synthetic ammonia, urea, DMF, and acetic acid are 2,175 CNY/ton, 1,596 CNY/ton, 3,929 CNY/ton, and 2,430 CNY/ton respectively, with gross profits of 195 CNY/ton, -68 CNY/ton, -194 CNY/ton, and 160 CNY/ton [2][10][41]. 4. Related Listed Companies - Key companies in the chemical sector include Wanhua Chemical, Baofeng Energy, Satellite Chemical, Hualu Hengsheng, and Xinheng [2].