1. Report Industry Investment Rating No relevant information provided. 2. Core Viewpoints of the Report The report is the second in the series of in - depth studies on chemical plants. It analyzes the upstream - downstream matching of the polyester industry chain and the marginal plants of futures varieties such as PX, PTA, PR, and PF. PTA enterprises with PX or polyester matching account for 91.6% of the production capacity, PX with downstream matching accounts for 82.0% of the production capacity, and polyester with upstream matching accounts for 72.1% of the production capacity. The marginal plants are identified from aspects like old plants, small single - line production capacity or enterprise scale, high production process costs, and long distances for raw material procurement or product sales [3][4]. 3. Summary According to the Directory 3.1 Polyester Industry Chain Upstream - Downstream Matching Analysis 3.1.1 Group - Based Upstream - Downstream Matching As of the end of July 2025, China's PX, PTA, and polyester production capacities were 4367, 9171.5, and 8894 tons respectively. The theoretical annual PX gap was 1640 tons, and the theoretical annual PTA surplus was 1567 tons. PTA enterprises with PX or polyester matching accounted for 91.6% of the production capacity, PX with downstream matching accounted for 82.0% of the production capacity, and polyester with upstream matching accounted for 72.1% of the production capacity. The enterprises in the polyester industry chain can be classified into four types: those with complete PX/PTA/polyester matching; those mainly with polyester and PTA matching but little PX matching; those with only PX and PTA matching; and those with relatively single matching [10][11]. 3.1.2 Region - Based Upstream - Downstream Matching The production capacity of the polyester industry chain is concentrated in Zhejiang, Jiangsu, Liaoning, Guangdong, Fujian, etc. Except for Shandong having a large surplus of PX for sale, most other regions have PX production capacity gaps or are basically balanced. Zhejiang, Jiangsu, and Liaoning have the largest PX gaps. In terms of PTA, Jiangsu and Zhejiang have large PTA production capacity gaps, while Liaoning, Guangdong, and other regions have PTA surpluses [12][15][16]. 3.2 PX Marginal Plant Analysis As of the end of July 2025, China's total PX production capacity was 4367 tons, with an effective operating capacity of 4254 tons. PX production capacity is mainly distributed in Zhejiang, Liaoning, Jiangsu, Guangdong, Shandong, etc. The marginal PX plants are identified from aspects such as production time, single - set scale, and production process. Old plants (over 20 years in production), small - scale plants (less than 100 tons), and medium - short - process plants (accounting for 17.4% of the total production capacity) are more likely to be marginal plants [20][23][30]. 3.3 PTA Marginal Plant Analysis As of the end of July 2025, the total PTA production capacity was 9171.5 tons, with 836.5 tons having been shut down for more than half a year. PTA production capacity is mainly distributed in coastal areas such as Zhejiang, Jiangsu, Liaoning, Guangdong, and Fujian. The marginal PTA plants are mainly those with a production capacity of less than 200 tons and put into production before 2020, with a total capacity of 1295 tons, accounting for 14.1% [34][40][41]. 3.4 PR Marginal Plant Analysis As of the end of July 2025, the total PR production capacity was 2168 tons, mainly distributed in Jiangsu, Hainan, and Liaoning. The top four bottle - chip manufacturers account for 78% of the total production capacity. The marginal bottle - chip plants are those that meet one or more of the following conditions: long production time, small plant scale, lack of upstream - downstream matching ability of the group, and high freight costs due to long distances for raw material procurement or product sales. A total of 326 tons of production capacity may be marginal plants, accounting for 15% [44][51][54]. 3.5 PF Marginal Plant Analysis As of the end of July 2025, the total PF production capacity was 968.5 tons, mainly distributed in Jiangsu, Zhejiang, and Fujian. The top four short - fiber manufacturers account for 46% of the total production capacity. Plants with a production time of over 20 years are mainly concentrated in Jiangsu and Fujian. Small - scale plants (less than 20 tons) are more likely to be marginal plants. The difference in processing costs between new and old plants is not significant, and the survival of old plants depends more on market dynamic balance [55][57][62].

Group 1 - Yihau New Materials plans to reduce its shareholding by up to 1% of the company's total shares, amounting to 165,500 shares, due to personal funding needs [1] - Fuxing Pharmaceutical's subsidiary has received approval for a new indication for its drug, which is used in the treatment of certain types of breast cancer [1][2] - Shantui Co. has submitted its H-share issuance application to the China Securities Regulatory Commission, which has been accepted [3] Group 2 - Sierte's chairman plans to increase his shareholding by an amount between 3 million to 6 million yuan [4] - Borui Pharmaceutical's BGM0504 tablet has received approval for clinical trials in overweight and obese adults [5] - Ganyue Expressway reported vehicle toll service revenue of 349 million yuan for August [6] Group 3 - Chip Microelectronics has submitted its H-share issuance application to the China Securities Regulatory Commission, which has been accepted [7] - Lingrui Pharmaceutical's director plans to reduce his shareholding by up to 200,000 shares, representing 0.0353% of the total shares [8] - Jiahu Energy has adjusted its share repurchase price limit to 11.63 yuan per share [10] Group 4 - Spring Airlines reported a year-on-year increase of 12.23% in passenger turnover for August [11] - Kaida has received an invention patent for a self-calibrating sensor technology [12] - Chuanheng Co. has obtained a new utility model patent aimed at improving industrial waste utilization [14] Group 5 - Huashi Technology received a government subsidy of 2.21 million yuan, accounting for 22.71% of its latest audited net profit [15] - Shanghai Pharmaceuticals' controlling shareholder plans to increase its H-share holdings by up to 74 million shares [16] - Hongrun Construction has won a bid for a significant segment of the Shanghai Metro Line 21 project, valued at 126 million yuan [18] Group 6 - Sanfangxiang plans to invest 100 million yuan to establish a wholly-owned subsidiary focused on green technology [19] - Lao Fengxiang's subsidiaries plan to jointly invest in luxury goods sales and gold refining companies [20][21] - China Eastern Airlines reported an 8.72% year-on-year increase in passenger turnover for August [22] Group 7 - Inner Mongolia First Machinery has signed a railway freight car procurement contract worth 186 million yuan [22] - Jiuqiang Bio has received five invention patents related to diagnostic reagents [24] - Longmag Technology plans to invest 210 million yuan in its second phase project in Vietnam [25] Group 8 - Galaxy Magnetics plans to acquire 100% equity of Kyoto Longtai, with its stock suspended for trading [26] - Jinlong Co.'s controlling shareholder will have 30 million shares auctioned [27] - Haishi Co.'s controlling shareholder has released the pledge on 29.97 million shares [28] Group 9 - Qiu Tianwei plans to reduce its shareholding by up to 1.17% of the total shares [29] - Xiaocheng Technology's directors plan to reduce their shareholding by a total of 0.08% [30] - Victory Co. reported that Sunshine Life Insurance has reduced its shareholding by 4.4 million shares [31] Group 10 - Xindong Technology plans to distribute a cash dividend of 0.156 yuan per share [32] - Huaqin Technology plans to distribute a cash dividend of 0.13 yuan per share [33] - Kexing Pharmaceutical's controlling shareholder intends to transfer 5% of the company's shares [35] Group 11 - Guojin Securities has completed the repayment of its second short-term financing bond for 1.0205 billion yuan [38] - Chunhui Intelligent Control's application for asset acquisition has been accepted by the Shenzhen Stock Exchange [39] - Chaohongji has submitted its H-share issuance application to the Hong Kong Stock Exchange [40] Group 12 - Tianyue Advanced has fully exercised its over-allotment option, involving 716,180 H-shares [40] - Chengfeng Technology's vice president has resigned due to internal adjustments [41] - Yingpais plans to establish a 100 million yuan technology sports industry investment fund [43]

| 证券代码：600370 | 证券简称：三房巷 | 公告编号：2025-069 | | --- | --- | --- | | 转债代码：110092 | 转债简称：三房转债 | | 江苏三房巷聚材股份有限公司 关于对外投资设立全资子公司的公告 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈述 或者重大遗漏，并对其内容的真实性、准确性和完整性承担法律责任。 重要内容提示： 投资标的名称：江阴三房巷聚材绿色科技有限公司（暂定名，最终以工 商部门核准登记为准）。 投资金额：江苏三房巷聚材股份有限公司（以下简称"公司"）以自有资 金人民币 10,000 万元出资设立江阴三房巷聚材绿色科技有限公司，并持有其 100%的股权。 交易实施尚需履行的审批及其他相关程序：本次对外投资事项已经公司 第十一届董事会第二十一次会议审议通过，未达到股东大会审议标准。 其它需要提醒投资者重点关注的风险事项：本次投资设立全资子公司尚 需办理工商注册登记相关手续，能否完成相关审批手续存在不确定性，成立后在 实际运营中可能面临宏观经济、市场环境、技术等方面的不确定因素影响，存在 经营管理、业务开展、收益等风险。公司将积极 ...

Group 1 - The company plans to invest 100 million yuan to establish Jiangyin Sanfangxiang Jucai Green Technology Co., Ltd. and will hold 100% equity in the new company [1] - The newly established company will focus on the research and production of recycled materials and new green chemical materials [1]

江苏三房巷聚材股份有限公司 （600370） 二〇二五年第二次临时股东大会 会议资料 江苏三房巷聚材股份有限公司董事会 2025 年 9 月 23 日 江苏三房巷聚材股份有限公司 2025 年第二次临时股东大会会议须知 为维护投资者的合法权益，保障股东在公司 2025 年第二次临时股东大会期间依法行使 权利，确保股东大会的正常秩序和议事效率，根据《中华人民共和国公司法》、《股东大会 议事规则》、《公司章程》等有关规定，特制定本须知： 一、请股东（或股东代表）按照本次股东大会会议通知（详见 2025 年 8 月 27 日刊登于 上海证券交易所网站（www.sse.com.cn）的《江苏三房巷聚材股份有限公司关于召开 2025 年第二次临时股东大会的通知》）中规定的时间和登记方法办理参加会议手续，证明文件不 齐或手续不全的，谢绝参会。 二、大会期间，全体出席人员应维护股东的合法权益、确保大会的正常秩序和议事效率， 自觉履行法定义务，不得侵犯其他股东的权益，不得扰乱大会正常秩序。为保证会场秩序， 会议开始后，请关闭手机铃声或调至振动状态。 三、股东（或股东代表）参加股东大会依法享有发言权、质询权、表决权等权利，同时 ...

Core Viewpoint - The company plans to invest 100 million yuan to establish a new subsidiary focused on green technology and sustainable materials [1] Group 1 - The company will fully own the newly established Jiangyin Sanfangxiang Jucai Green Technology Co., Ltd. [1] - The new subsidiary will engage in the research and production of recycled materials and new green chemical materials [1]

Group 1 - The company Jiangsu Sanfangxiang Jucai Co., Ltd. has announced the establishment of a new subsidiary, Jiangyin Sanfangxiang Jucai Green Technology Co., Ltd., with an investment of 100 million yuan [1] - The new subsidiary will focus on the research and production of recycled materials and green chemical new materials, aligning with the company's business strategy [1] - The investment has been approved by the company's board of directors and does not constitute a related party transaction or a major asset restructuring [1] Group 2 - The new subsidiary will be fully owned by the company and will be included in the consolidated financial statements [1] - The financial and operational impact of this investment is not expected to be significant [1] - The company will need to complete business registration for the new subsidiary and may face risks related to macroeconomic conditions, market dynamics, and technology during its operations [1]

Core Viewpoint - The company has established a new subsidiary, Jiangyin Sanfangxiang Jucai Green Technology Co., Ltd., with an investment of 100 million RMB to focus on the research and production of recycled materials and green chemical new materials, aligning with its sustainable development strategy [1] Group 1 - The company invested 100 million RMB of its own funds to set up the new subsidiary [1] - The new subsidiary will hold 100% ownership by the company [1] - The focus of the new subsidiary includes the research and production of recycled materials and green chemical new materials [1] Group 2 - The establishment of the subsidiary is part of the company's business development needs [1] - The initiative aligns with the company's goals of green circular and sustainable development [1]

| 证券代码：600370 | 证券简称：三房巷 | 公告编号：2025-068 | | --- | --- | --- | | 转债代码：110092 | 转债简称：三房转债 | | 江苏三房巷聚材股份有限公司 具体变动情况如下： | 北京风炎益添 | | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | | 六号私募证券 | 19,550 | 0.08 | 19,550 | 0.08 | 0 | | 0.00 | | 投资基金 | | | | | | | | | 合计 | 5,010,720 | 20.04 | 2,583,030 | 10.33 | | 2,427,690 | 9.71 | 特此公告。 江苏三房巷聚材股份有限公司 关于债券持有人持有可转换公司债券比例变动达10%的公告 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈 述或者重大遗漏，并对其内容的真实性、准确性和完整性承担法律责任。 经中国证券监督管理委员会《关于核准江苏三房巷聚材股份有限公司公开发 行可转换公司债券的批复》（证监许可〔2022〕29 ...

Market Overview - On September 12, the chemical fiber sector rose by 0.14% compared to the previous trading day, with Baolidi leading the gains [1] - The Shanghai Composite Index closed at 3883.69, up 0.22%, while the Shenzhen Component Index closed at 12996.38, up 0.13% [1] Stock Performance - Baolidi (300905) closed at 36.33, with a gain of 7.90% and a trading volume of 153,300 shares, amounting to a transaction value of 560 million yuan [1] - Wanhui High-tech (600063) closed at 6.07, up 5.02%, with a trading volume of 809,900 shares [1] - Hengshen New Materials (000782) closed at 6.09, up 5.00%, with a trading volume of 386,100 shares [1] - Other notable stocks include Xinxiang Chemical Fiber (000949) at 4.32 (+2.13%) and Nanjing Chemical Fiber (600889) at 15.90 (+1.66%) [1] Capital Flow - The chemical fiber sector experienced a net outflow of 122 million yuan from main funds, while retail investors saw a net inflow of 140 million yuan [2] - The table of capital flow indicates that Wanhui High-tech had a main fund net inflow of 46.72 million yuan, while Baolidi had a net outflow of 36.79 million yuan from main funds [3] - Retail investors showed a net inflow of 6.46 million yuan into Baolidi, despite the overall net outflow from main and speculative funds [3]