Core Viewpoint - Tongkun Co., Ltd. has successfully redeemed its fifth phase of technology innovation bonds for the year 2025, with a total principal and interest payment amounting to RMB 504 million [1] Group 1 - The fifth phase of technology innovation bonds has matured on December 23, 2025 [1] - The total amount of principal and interest redeemed by the company is RMB 504 million [1]

Core Viewpoint - Tongkun Co., Ltd. has shown a significant stock price increase of 35.97% year-to-date, with a recent rise of 10.49% over the last five trading days, indicating strong market performance and investor interest [1]. Financial Performance - For the period from January to September 2025, Tongkun Co., Ltd. reported a revenue of 67.397 billion yuan, reflecting a year-on-year decrease of 11.38%. However, the net profit attributable to shareholders increased by 53.83% to 1.549 billion yuan [2]. - The company has distributed a total of 3.203 billion yuan in dividends since its A-share listing, with 341 million yuan distributed over the past three years [3]. Shareholder Information - As of September 30, 2025, the number of shareholders for Tongkun Co., Ltd. decreased by 28.96% to 50,100, while the average number of circulating shares per shareholder increased by 40.76% to 47,780 shares [2]. - The top ten circulating shareholders include Hong Kong Central Clearing Limited, which increased its holdings by 9.4667 million shares to 35.9221 million shares, and a new entry, Penghua CSI Sub-Segment Chemical Industry Theme ETF, holding 25.2748 million shares [3]. Stock Market Activity - On December 22, the stock price of Tongkun Co., Ltd. reached 15.91 yuan per share, with a trading volume of 1.24 billion yuan and a turnover rate of 0.33%. The total market capitalization stands at 38.26 billion yuan [1]. - The net outflow of main funds was 2.7611 million yuan, with significant buying and selling activity observed in large orders [1]. Business Overview - Tongkun Co., Ltd. specializes in the production and sales of various types of polyester filament and fabric, with its main revenue sources being polyester pre-oriented yarn (61.10%) and purified terephthalic acid (37.69%) [1]. - The company is classified under the petrochemical industry, specifically in refining and trade, and is part of several concept sectors including undervalued stocks and the Yangtze River Delta integration [1].

东吴证券近日发布大炼化周报：国内重点大炼化项目本周价差为2674元/吨，环比+104元/吨（环比 +4%）；国外重点大炼化项目本周价差为1305元/吨，环比-24元/吨（环比-2%）。本周PX均价为838.6美 元/吨，环比+1.7美元/吨，较原油价差为400.0美元/吨，环比+15.7美元/吨，PX开工率为89.2%，环比 +0.0pct。 以下为研究报告摘要： 【相关上市公司】民营大炼化&涤纶长丝：恒力石化、荣盛石化、恒逸石化、桐昆股份、新凤鸣。 投资要点 【风险提示】1）项目实施进度不及预期；2）宏观经济增速下滑，导致需求复苏弱于预期；3）地缘风 险演化导致原材料价格波动；4）行业产能发生重大变化；5）统计口径及计算误差。（东吴证券 陈淑 娴,周少玟） 【国内外重点炼化项目价差跟踪】国内重点大炼化项目本周价差为2674元/吨，环比+104元/吨（环比 +4%）；国外重点大炼化项目本周价差为1305元/吨，环比-24元/吨（环比-2%）。 【聚酯板块】本周POY/FDY/DTY行业均价分别为6293/6536/7686元/吨，环比分别-111/-125/-61元/吨， POY/FDY/DTY行业周均利润为 ...

1. Report Industry Investment Rating No industry investment rating information is provided in the report. 2. Core View of the Report The report focuses on the weekly data of the large refining and chemical industry, showing that the cost - side support has weakened and filament prices have declined. It also analyzes the price, profit, inventory, and other indicators of different sectors such as refining, polyester, and chemicals, and tracks the performance and profit forecasts of relevant listed companies [1][2]. 3. Summary According to Relevant Catalogs 3.1 Big Refining Weekly Data Briefing - **Stock Price and Market Value of Listed Companies**: The report tracks the stock price changes of six major private refining and chemical companies in the past week, month, three - month, one - year, and from the beginning of 2025 to the present. For example, the oil and petrochemical index rose 1.6% in the past week, while Rongcheng Petrochemical rose 5.1%. It also provides the stock price, total market value, and profit forecasts of these companies from 2024A to 2027E [7]. - **Oil Price and Refining Spread**: The average price of Brent crude oil this week was $60.1 per barrel, a decrease of $1.9 ( - 3.1%) compared to the previous week, and a decrease of 18.4% compared to the same period last year. The average price of WTI crude oil was $56.3 per barrel, a decrease of $2.0 ( - 3.4%) compared to the previous week, and a decrease of 20.1% compared to the same period last year. The spread of domestic refining projects this week was 2,673.8 yuan/ton, an increase of 104.3 yuan/ton (4.1%) compared to the previous week, and an increase of 6.7% compared to the same period last year. The spread of foreign refining projects was 1,305.4 yuan/ton, a decrease of 23.6 yuan/ton ( - 1.8%) compared to the previous week, and an increase of 26.5% compared to the same period last year [7]. - **Polyester Sector**: The average prices of POY, FDY, and DTY in the industry this week were 6,292.9 yuan/ton, 6,535.7 yuan/ton, and 7,685.7 yuan/ton respectively, with week - on - week decreases of 110.7 yuan/ton, 125.0 yuan/ton, and 60.7 yuan/ton. The weekly average profits were - 58.4 yuan/ton, - 162.7 yuan/ton, and 3.2 yuan/ton respectively, with week - on - week decreases of 75.4 yuan/ton, 84.9 yuan/ton, and 42.2 yuan/ton. The inventory days were 19.0 days, 24.3 days, and 24.9 days respectively, with week - on - week increases of 2.3 days, 2.1 days, and 1.0 days. The filament operating rate was 89.1%, a decrease of 0.7 percentage points compared to the previous week [2][8]. - **Refining Sector**: The prices of gasoline, diesel, and jet fuel in China and the United States decreased this week [2]. - **Chemical Sector**: The average price of PX this week was $838.6 per ton, an increase of $1.7 compared to the previous week, and the spread compared to crude oil was $400.0 per ton, an increase of $15.7 compared to the previous week. The PX operating rate was 89.2%, unchanged from the previous week [2]. 3.2 Big Refining Weekly Report - **2.1 Big Refining Index and Project Spread Trends**: The report may show the trends of the big refining index and project spreads, but specific data and analysis are not detailed in the provided text, only the titles of relevant charts are given [10][11]. - **2.2 Polyester Sector**: It mainly analyzes the price, profit, inventory, operating rate, and sales - to - production ratio of various products in the polyester sector, including PX, PTA, MEG, POY, FDY, DTY, polyester staple fiber, polyester bottle chips, etc. For example, it studies the relationship between the price of PX and crude oil, the profit of PTA, and the inventory of filament products [22][23]. - **2.3 Refining Sector**: It is divided into domestic, US, European, and Singaporean refined oil markets, analyzing the price and spread of gasoline, diesel, and jet fuel in these regions compared to crude oil [80][92]. - **2.4 Chemical Sector**: It analyzes the price and spread of various chemical products such as EVA photovoltaic materials, pure benzene, styrene, etc., compared to crude oil [129][130].

Investment Rating - The report does not explicitly state an investment rating for the petrochemical industry, but it provides insights into price trends and market conditions that could influence investment decisions. Core Insights - The report highlights that the downstream stocking demand for winter is nearing its end, with polyester filament experiencing slight inventory accumulation [1]. - Domestic key refining project price spread is reported at 2540.74 CNY/ton, with a week-on-week increase of 7.17 CNY/ton (0.28%), while the international price spread is at 1303.62 CNY/ton, showing a decrease of 27.50 CNY/ton (-2.07%) [2][3]. - Brent crude oil's average price for the week ending December 19, 2025, is noted at 60.08 USD/barrel, reflecting a week-on-week decline of 3.10% [2]. Refining Sector Summary - The report discusses geopolitical factors affecting oil prices, including negotiations between Ukraine and the U.S. and sanctions on Venezuelan oil, which have led to fluctuations in international oil prices [2]. - Domestic refined oil prices have slightly decreased, with improvements in price spreads. The average prices for diesel, gasoline, and aviation kerosene are reported as 6625.29 CNY/ton, 7641.71 CNY/ton, and 5800.48 CNY/ton, respectively [15]. - The report notes that the chemical sector has seen a general decline in chemical prices, with some products experiencing smaller declines relative to cost, leading to improved price spreads [2]. Chemical Sector Summary - In the polyester sector, the report indicates that the price of PX and MEG has slightly decreased, while PTA prices remain stable. The overall price trend in the polyester industry is downward due to weak demand and increased production capacity [2]. - The report mentions that the EVA market is seeing price declines as production resumes from maintenance, with the average price reported at 9778.57 CNY/ton [50]. - The report also highlights that the price of pure benzene remains stable, while styrene prices have decreased due to weak cost support, with the average price reported at 6614.29 CNY/ton [50].

Investment Rating - The report indicates a positive outlook for the petrochemical sector, with the overall performance of the sector outperforming the Shanghai Composite Index by 1.57% this week [9]. Core Insights - Oil prices have remained volatile, influenced by geopolitical developments, particularly the progress in Russia-Ukraine negotiations and the fluctuating situation in Venezuela, which has led to a widening discount on Venezuelan oil [14]. - The average operating rate of domestic refineries is stable at 75.11%, while the average refining profit for major refineries is reported at 613.88 CNY/ton, showing a decrease from the previous period [3]. - The polyester sector is experiencing weak demand as the year-end approaches, with expectations of reduced operating rates for weaving machines [3]. - The ethylene market remains stable, with domestic prices holding steady, while propylene prices have seen a slight decline due to ample supply [3]. Summary by Sections Market Overview - The petrochemical sector has outperformed the Shanghai Composite Index, with various indices showing mixed performance, such as the polyester index increasing by 4.65% [9][10]. Oil and Gas Sector - As of December 18, WTI crude oil is priced at 56.15 USD, down by 1.45 USD, while Brent crude is at 61.43 USD, down by 0.95 USD. The U.S. commercial crude oil inventory decreased by 1.274 million barrels [14]. - The U.S. active oil rig count increased by 1 to 414 rigs, indicating a slight uptick in exploration activity [14]. Refining Sector - The average refining profit for major refineries is reported at 613.88 CNY/ton, a decrease of 31.59 CNY/ton from the previous period [3]. - The average operating rate for major refineries is stable at 75.11% [3]. Polyester Sector - The average profit for polyester products shows a decline, with POY150D at 38.35 CNY/ton, down by 71.09 CNY/ton, and FDY150D at -166.66 CNY/ton, down by 81.13 CNY/ton [3]. - PTA processing fees have slightly decreased to 156.51 CNY/ton, indicating ongoing challenges in profitability within the sector [3]. Olefins Sector - Ethylene prices remain stable at 6172 CNY/ton, while propylene prices in Shandong have decreased to 5955 CNY/ton, reflecting a 2.22% decline [3].

Group 1 - The chemical sector continues to show strong performance, with the chemical ETF (516020) rising by 1.12% as of the latest report [1] - Key stocks in the sector include Huafeng Chemical, which surged over 6%, and Luxi Chemical, which increased by over 4% [1] - Other notable gainers include Rongsheng Petrochemical, Yangnong Chemical, and Boyuan Chemical, each rising by more than 3% [1] Group 2 - Lithium carbonate prices have significantly increased, with futures reaching nearly 110,000 yuan/ton, marking an 8.84% rise on December 17 [2] - The price of lithium carbonate has risen by 84.1% from its low point earlier in the year [2] - Dongguan Securities expresses optimism about the lithium battery industry, predicting a 17% growth in global new energy vehicle sales by 2026 and a 20% increase in demand for power batteries [3] Group 3 - The chemical sector is currently viewed as having a favorable valuation, with the chemical ETF's underlying index trading at a price-to-book ratio of 2.4, which is relatively low historically [3] - Guohai Securities anticipates that the dividend capacity of Chinese chemical companies will improve, indicating a high potential dividend yield [3] - Huazhong Securities notes a clear differentiation in chemical product prices, with expectations for gradual recovery in pricing across the sector [3] Group 4 - The chemical ETF (516020) provides an efficient way to invest in the chemical sector, covering various sub-sectors and concentrating on large-cap leading stocks [4] - Nearly 50% of the ETF's holdings are in major companies like Wanhua Chemical and Salt Lake Co., allowing investors to capitalize on strong market leaders [4] - Investors can also access the chemical ETF through linked funds for broader exposure to the sector [4]

证券之星消息，12月17日炼化及贸易板块较上一交易日上涨0.02%，桐昆股份领涨。当日上证指数报收 于3870.28，上涨1.19%。深证成指报收于13224.51，上涨2.4%。炼化及贸易板块个股涨跌见下表： 以上内容为证券之星据公开信息整理，由AI算法生成（网信算备310104345710301240019号），不构成投资建议。 从资金流向上来看，当日炼化及贸易板块主力资金净流出5403.85万元，游资资金净流出1.25亿元，散户 资金净流入1.79亿元。炼化及贸易板块个股资金流向见下表： ...

Core Viewpoint - The A-share market showed a positive trend today, with the Shanghai Composite Index rising by 0.77% and trading volume increasing significantly compared to the previous trading day [1] Industry Performance - The communication sector led the gains with an increase of 3.03%, followed by the electronics sector at 1.25% and the basic chemicals sector at 1.17% [1] - The defense and military industry experienced the largest decline at -0.76%, followed by light industry manufacturing at -0.69% and real estate at -0.66% [1] Trading Volume and Changes - The total trading volume reached 833.76 billion shares, with a total transaction amount of 12,786.33 billion yuan, marking an increase of 700.39 million yuan from the previous trading day [1] - The communication sector had a transaction amount of 1,092.14 billion yuan, which decreased by 15.68% compared to the previous day [1] - The electronics sector recorded a transaction amount of 2,035.94 billion yuan, down by 6.24% from the previous day [1] Leading Stocks - The leading stock in the communication sector was Lian Te Technology, which rose by 20.00% [1] - In the electronics sector, N Mu Xi-U saw a significant increase of 673.99% [1] - The basic chemicals sector was led by Dongfang Iron Tower, which increased by 10.03% [1]

Investment Strategy Overview - The report emphasizes two main investment themes for the chemical industry: anti-involution policies and domestic substitution, which are expected to drive recovery and growth in the sector [4][5][6] Anti-Involution and Cycle Recovery - The report suggests that the chemical industry is at a turning point, with anti-involution measures leading to a recovery in the cycle. Key areas include the peak of new capacity in organic silicon, the end of PTA capacity expansion, and a rebound in prices for certain chemicals due to supply chain disruptions [4][5] - The China Chemical Product Price Index (CCPI) has decreased significantly, dropping to 3865 points by November 30, 2025, down 16.37% from early 2024 and 10.71% from the beginning of 2025 [4][20] Domestic Substitution as a Growth Driver - Domestic substitution is highlighted as a key growth driver, with significant support from national policies for bio-based materials and advancements in technology leading to a more robust domestic supply chain [4][6] - The report identifies several companies positioned to benefit from these trends, including KaiSai Bio and RuiFeng New Materials, which are making strides in bio-based materials and lubricant additives, respectively [5][6] Market Dynamics and Price Recovery - The report notes that while the chemical market is experiencing a downturn, certain segments are expected to see price recovery due to improved supply-demand dynamics and reduced capacity expansion [4][22] - Specific chemical products have shown varied price movements, with some experiencing significant declines while others are stabilizing or recovering [22] Manufacturing Sector Recovery - The manufacturing sector is showing signs of recovery, which is anticipated to support the chemical industry. The report mentions that the real estate market is stabilizing, and automotive production has increased, indicating a potential uptick in demand for chemical products [25][33] Capital Expenditure Trends - Capital expenditure growth in the chemical industry is slowing, with a notable decline in new projects. The report indicates that the total construction in progress for the chemical sector was 327.57 billion yuan in Q3 2025, down 17.64% year-on-year [34][39] Inventory and Consumption Trends - High inventory levels in the chemical sector are being addressed as consumer demand begins to recover. The report suggests that the inventory-to-revenue ratio for the basic chemical industry was 0.62 in Q3 2025, indicating a slight increase from the previous year [41][42] Profitability and Financial Performance - The report highlights a recovery in profitability for the chemical industry, with gross margins and return on equity (ROE) showing improvement in Q3 2025 compared to previous periods [56][60] - Specific sub-sectors, such as agrochemicals and fluorochemicals, have demonstrated significant profit growth, with some exceeding 100% year-on-year increases [55][56]