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Beijing Maianrui Technology Co., Ltd. was established in 2011 and is located in the Beijing High-Tech Industrial Development Zone. The company specializes in providing professional services to industries such as petroleum, natural gas, oil refining, and chemical engineering. Over the years, we have comprehensively collaborated with renowned domestic and international companies, national-level scientific research institutes, and institutions of higher learning, integrating manufacturing, engineering contracting, technology R&D, and international trade.

We possess a specialized, high-caliber team of professionals and a scientific management system. Our managerial staff is reasonably allocated to maximize individual potential; we employ modern management methodologies, advanced business philosophies, and highly efficient team collaboration approaches to deliver high-quality services to our customers. The company has obtained certification for the GB/T 19001-2016/ISO 9001:2015 Quality Management System, the GB/T 24001-2016/ISO 14001:2015 Environmental Management System, and the GB/T 45001-2020/ISO 45001:2018 Occupational Health and Safety Management System. Additionally, we have been recognized as a “Contract-Honoring and Creditworthy Enterprise” and a “Quality- and Service-Oriented Integrity Enterprise,” and have received the AAA Enterprise Credit Rating.

Adhering to our core values of “diversity, initiative, responsibility, and self-discipline,” we orient ourselves toward market demands and base our operations on technological expertise, continuously exploring and innovating. Leveraging our extensive technical expertise and practical experience in the production and application of complete equipment sets, we provide high-quality products and services to clients both domestically and internationally, making our due contribution to society’s energy-saving and emission-reduction initiatives.

Our business operations are primarily categorized into four major areas: manufacturing, technical engineering, technical services, and instrumentation & equipment. Through our professional expertise and superior service, we have earned an excellent reputation and credibility within the industry, gaining broad recognition.

Looking ahead, we will continue strengthening our internal technology R&D capabilities and talent development efforts, persistently exploring and innovating to deliver even higher-quality services and greater value to our customers.

North Huajin Chemical Industry Co., Ltd. (Stock Abbreviation: Huajin Co., Ltd.; Stock Code: 000059.SZ), headquartered in Panjin City, Liaoning Province, is an A-share listed company under the actual control of the State-owned Assets Supervision and Administration Commission of the State Council (SASAC) and majority-owned by China National Petroleum Corporation (CNPC). It is the successor entity to a key national project under China’s First Five-Year Plan and a large-scale integrated refining and petrochemical enterprise in Northeast China. The company’s registered capital amounts to RMB 1.598 billion, with total assets exceeding RMB 40 billion and approximately 12,000 employees.

The company’s core businesses span refining, ethylene production, aromatic hydrocarbons, fertilizers, ABS resin, polyolefins, lubricant base oils, and military-specialty petroleum products. Its customers include major petrochemical bases, new-energy vehicle material manufacturers, civil aviation jet fuel users, Northeast China’s emergency fertilizer supply system, and Central Asian energy cooperation partners. The company possesses end-to-end technical implementation capabilities—from crude oil processing to high-end synthetic materials—and owns proprietary process packages, including highly efficient heavy-oil catalytic cracking conversion, long-cycle ethylene plant operation optimization, PX adsorption separation, and low-sulfur marine fuel blending. It holds 137 valid invention patents and 203 utility model patents; has led or participated in the formulation and revision of 12 national standards and 28 industry standards; and operates a national-level enterprise technology center and a postdoctoral research workstation.

The company is certified under ISO 9001/14001/45001/50001 management systems and holds the following permits and qualifications: Dangerous Chemicals Production Safety License (Liaoning WH Anxu Zheng Zi [2024] No. 001); Grade II Confidentiality Qualification for Scientific Research and Production of Arms and Equipment (Guobao Ren Zi [2022] No. 1026); Certification for Confidential Business Consulting Services Related to Military Industry (JYB210012); and Civil Aviation Administration of China (CAAC) Jet Fuel Airworthiness Approval Certificate (CAAC-FQ-2023-007).

Its Panjin Base achieves annual refining throughput exceeding 13 million metric tons, ethylene output of 1.2 million metric tons, and ABS resin production capacity of 600,000 metric tons. In 2024, Huajin ranked among the top three nationwide in ABS resin production and sales volume. Phase I of the “Liaodongwan New Area Green and Low-Carbon New Materials Industrial Base” (a 300,000-metric-ton-per-year high-performance ABS resin and butadiene extraction facility) commenced operations in June 2025 and is designated by the National Development and Reform Commission (NDRC) as a demonstration project for green and low-carbon development in the petrochemical industry. The company also undertakes the key research topic “Green Manufacturing Key Technologies for High-Performance Engineering Plastic Monomers” under the National Key R&D Program.

Huajin’s ABS resin is exported to 12 countries—including Vietnam, Thailand, and Turkey—with export revenue reaching RMB 320 million in 2024, accounting for 5.1% of total revenue. Its products comply with API, ASTM, EN, EU REACH, and U.S. TSCA regulatory requirements and the company possesses combined technical licensing and engineering implementation delivery capabilities.

Baoti Huashen Titanium Industry Co., Ltd. was established in 2001 and is located in Jinzhou City, Liaoning Province. In September 2007, it came under the control of Baoji Titanium Industry Co., Ltd. The company currently occupies an area of 420 mu (approximately 28 hectares) and has total assets of RMB 1.5 billion. Its primary products include titanium sponge, zirconium sponge, and titanium tetrachloride, with annual production capacities of 25,000 tons of titanium sponge, 1,000 tons of zirconium sponge, and 120,000 tons of titanium tetrachloride.

The company employs 1,014 people, including 917 personnel in the Production Division (73 production and technical management staff and 844 production workers), 15 personnel in the Operations Division, 43 personnel in the Management Division, and 33 personnel in the Quality Division. There are six senior executives.

The company is the first domestic enterprise to achieve full-process, centralized mass production of titanium, zirconium, and hafnium, and is also an advanced intelligent and digital enterprise within the industry. It has established long-term, stable cooperative relationships with major domestic titanium material enterprises and is one of the principal suppliers of raw materials for their key applications.

The company is a national high-tech enterprise, possessing a large number of production and technical personnel who closely follow world-leading technologies, as well as a systematic scientific research system and robust technological development capabilities. It operates the Chlorination Metallurgy Research Institute and a provincial-level enterprise technology center. To date, it has received over 30 science and technology achievement awards at the provincial and municipal levels and holds more than 60 national patents. The company maintains a comprehensive quality control and assurance system and has successively obtained certifications for the GJB9001C-2017 and ISO9001-2015 quality management systems.

Baojin Xincheng Jiangdu Gas Co., Ltd. is a production facility for air separation products, established on January 26, 2010, as a joint venture between Shanghai Baogang Gas Co., Ltd. and Jiangsu Xincheng Gas Co., Ltd. The company is located in Daqiao Town, Jiangdu District, Yangzhou City, Jiangsu Province, with a registered capital of RMB 60 million and over 90 employees.

Bayannaoer Zhongke Chemical Co., Ltd. was established on May 22, 2023. Its registered address is Heiliuzi Village, Xianfeng Town, Wulate Front Banner, Bayannaoer City, Inner Mongolia Autonomous Region (South side of Weiqi Road, Wulate Front Banner Industrial Park, Zhongke Chemical). Yu Wenguang is the legal representative. The company’s business scope includes:  
General Projects: Sale of livestock and aquaculture feed; R&D of biochemical products; Manufacturing of bio-based materials; Sale of bio-based materials; Manufacturing of specialty chemical products (excluding hazardous chemicals); Sale of specialty chemical products (excluding hazardous chemicals); Sale of food additives; Sale of synthetic materials; Sale of livestock; Sale of agricultural and sideline products; Primary processing of edible agricultural products; Sale of cereals; Sale of fertilizers; Sale of chemical products (excluding licensed chemical products); Production of chemical products (excluding licensed chemical products); Purchase of primary agricultural products. (Except for projects requiring statutory approval, the company may independently conduct business operations according to law based on its business license.)  
Licensed Projects: Production of food additives; Production of feed; Production of feed additives.

Anshan Yangtian Metallurgical Energy Technology Co., Ltd. was established in March 2006 as a new, comprehensive enterprise specializing in the production of flame-cutting equipment, cutting tools, and industrial cutting gases, integrating research on thermal cutting technologies, manufacturing, technical consultation, and on-site technical services. The company’s registered capital is RMB 50.5 million, with nearly 500 employees and an annual operating revenue of RMB 120 million.

The company has established business cooperation and sound cooperative relationships with numerous metallurgical enterprises, including Angang Steel Co., Ltd. Currently, it provides integrated services—including supply and maintenance of industrial gases, flame-cutting equipment, and tools, as well as technical services and consultation—to Angang Steel’s Bayuquan Branch, the General Steelmaking Plant, the Seamless Steel Tube Plant, and the Medium & Heavy Plate Business Unit. Committed to green, low-carbon, and environmentally friendly development, the company vigorously conducts technological research and development activities. It has jointly established the Anshan Functional Materials R&D Center with the Institute of Chemistry, Chinese Academy of Sciences, and engages in technological exchanges and cooperation with advanced enterprises and research institutions such as those in Germany and Harbin Institute of Technology. As a result, the company has evolved into a new, comprehensive enterprise integrating production, supply, sales, and R&D, with core businesses centered on metallurgical cutting and industrial gas production, possessing strong competitive advantages in the market.

The company consistently adheres to the business philosophy of “Integrity, Innovation, Service, and Win-Win,” winning customer satisfaction through high-quality products and attentive service. To realize its corporate vision of establishing Yangtian as the No. 1 brand serving the metallurgical industry, the company continuously enhances its core competitiveness, meets market demands, and generates superior economic and social benefits.

Ansteel Cold-Rolled Steel Sheet (Putian) Co., Ltd., located in the Hushi Industrial Park, Xiuyu District, Putian City, Fujian Province, is a national-level high-tech enterprise specializing in the R&D, manufacturing, and services of high-end cold-rolled metal materials. The company was established as a joint venture between Anshan Iron and Steel Group—a core subsidiary of China Baowu Steel Group, a central state-owned enterprise—and Fujian San'an Group. With a registered capital of 1.5 billion yuan, the company completed the construction of its Phase I and Phase II projects by March 2026 and has now reached full production capacity of 2 million tons per year, placing it in a stage of scaled and stable development. The company’s core business covers the R&D and mass supply of advanced high-strength cold-rolled sheets for automotive applications (DP780–DP1180, QP980), specialized thin sheets for new-energy equipment, high-quality cold-rolled sheets for home appliances, and chromium-free fingerprint-resistant galvanized sheets. Its products have thicknesses ranging from 0.18 to 2.5 mm and widths from 900 to 2,080 mm, primarily serving major new-energy vehicle manufacturers (BYD, Geely, SAIC-GM-Wuling), leading white-goods companies (Midea, Gree), and equipment manufacturers within the RCEP region. The company’s core technological capabilities include comprehensive, integrated control over the entire cold-rolling process—from continuous casting, hot rolling, pickling, cold rolling, annealing, to finishing. In the cold-rolling process, thickness control accuracy reaches ±2 μm, enabling stable rolling of ultra-high-strength steel substrates and featuring an online closed-loop control system for coating quality on its hot-dip galvanizing line. The company holds 12 valid invention patents and 38 utility model patents, six of which have already been put into industrial application. Its surface roughness Ra is ≤0.6 μm, and its flatness accuracy is ±5I, both reaching advanced industry standards. The company has obtained ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, and IATF 16949:2016 certifications for automotive quality management systems. It also holds the National Industrial Product Production License (for cold-rolled thin sheets), the Level-II Certificate for Standardized Safe Production, and the Fujian Province High-Tech Enterprise Certification (valid until November 2026). Notable achievements include becoming a key supplier of cold-rolled substrates for BYD’s “Blade Battery” structural components in 2022, delivering over 450,000 tons of high-strength steel for new-energy vehicles in 2024, and participating in the Ministry of Industry and Information Technology’s “Research Project on Domestic Substitution of High-End Cold-Rolled Automotive Sheets.” Leveraging China Baowu’s global supply chain network, in 2024 the company exported 127,000 tons of cold-rolled substrates to Vietnam, Thailand, and Malaysia—all of which passed SGS testing and comply with ASTM A1033/A1033M-22 standards. Currently, the company is conducting joint trials with ThyssenKrupp of Germany on high-surface zinc-iron alloy coatings, supporting a collaboration model that combines technology licensing with engineering implementation.

Anhui Zhonghe Tongyuan Technology Co., Ltd. is located in the High-tech Zone of Hefei City, Anhui Province. It is a high-tech enterprise established with the support of relevant units under China National Nuclear Corporation (CNNC). The company focuses on the intersection of nuclear technology applications and advanced materials, positioning itself in the R&D, production, and industrialization services of nuclear energy supporting equipment, radiation-shielding functional materials, and intelligent detection systems. With a registered capital of 50 million yuan, the company was founded in December 2021. As of the end of 2025, it has achieved technical service contract values totaling 127 million yuan, serving all six major domestic nuclear power groups and 23 nuclear facility operators across China. The company’s core business targets specialized chemical engineering scenarios including nuclear chemistry, spent fuel reprocessing, radioactive waste management, fast reactors, and small modular nuclear power sources. It provides third-generation flexible radiation shielding materials (density ≤ 2.8 g/cm³, thermal neutron absorption cross-section ≥ 2400 barns), portable rapid localization terminals for radioactive contamination (TY-RAD-300, detection limit 0.05 μSv/h), and dynamic radiation field simulation platforms (Tongyuan RadSim V2.3, supporting dual-engine modeling with MCNP/Geant4). Its core capabilities encompass the development and mass production of specialized shielding material formulations (annual output of 500 tons), integration of intelligent inspection robot systems (ZL202311620455.1 has been successfully commercialized), and EPC delivery of radiation safety compliance design and shielding upgrades. The company holds Class II qualifications for the sale and use of radiation devices and complies with the military industry quality management system (GJB9001C-2017). The enterprise has obtained ISO 9001/14001/45001 triple-system certification, holds a “Radiation Safety License” (Wan Huan Fu Zheng [2023] No. 089), and was included in the 2024 list of High-tech Enterprises in Anhui Province (Wan Ke Gao [2024] No. 27). The company owns 12 invention patents, 28 utility model patents, and 9 software copyrights. Typical achievements include: completing the shielding upgrade project for the radioactive waste interim storage facility at CNNC Lanzhou Uranium Enrichment Company; serving as a key supplier for the national nuclear energy development special project “Research and Development of Radiation Protection Systems for Small Mobile Nuclear Power Sources” (NKD2024-017); and providing lightweight lead-boron polyethylene composite shielding panels (ZL202310492812.6) for CNNC Group’s pilot-scale spent fuel reprocessing platform. Its products have been approved for export to the C-4 unit overhaul project at the Chashma Nuclear Power Plant in Pakistan, and the company has signed a joint testing memorandum of understanding with Argentina’s National Atomic Energy Commission. The company supports CE-EMC and RoHS-compliant exports and is capable of engaging in technology licensing and localized engineering implementation collaborations.

安徽雪郎生物科技股份有限公司（证券简称：雪郎科技，证券代码：837491）位于安徽省蚌埠市高新技术产业开发区，是一家专注生物基新材料研发、生产与应用的国家高新技术企业。公司成立于2016年，在全国中小企业股份转让系统挂牌上市，已实现从实验室技术验证、中试放大到万吨级稳定量产的产业化跨越。

### 核心业务与产品
公司主营L-乳酸、聚乳酸（PLA）及其改性复合材料的研发与制造，产品广泛应用于可降解包装、绿色食品接触材料、生物医用材料及环保制品等领域。具体包括：
- **L-乳酸**：作为PLA生产的原料，是生物基材料的重要组成部分。
- **聚乳酸（PLA）**：一种可完全生物降解的高分子材料，具有优异的机械性能和加工性能。
- **PLA改性复合材料**：通过共混改性技术，提升PLA的耐热性、韧性及加工性能，满足不同应用场景的需求。

公司为浙江众塑、山东天壮环保等头部可降解包装企业提供定制化PLA切片及PLA/PBAT合金材料，并支撑其完成超8000吨/年的快递袋、生鲜托盘等终端制品量产。

### 核心技术与专利
公司的核心技术依托与中国科学院过程工程研究所、江南大学等机构的产学研合作，拥有丰富的知识产权成果：
- **授权发明专利**：37项（其中PLA聚合与共混改性核心专利11项）。
- **实用新型专利**：15项。

公司采用自主优化的微生物发酵—双螺杆熔融缩聚工艺，所产PLA重均分子量达15–20万，热变形温度≥65℃，形成了覆盖注塑、吹膜、纺丝的12个主力产品系列。

### 认证与资质
公司通过了ISO 9001、ISO 14001、ISO 45001管理体系认证，持有食品接触用塑料材料及制品SC生产许可证（SC12234030300238）。此外，PLA树脂获工信部《绿色设计产品名录（2024年版）》认定，并通过欧盟EN 13432、美国ASTM D6400、澳大利亚AS 5810等国际生物降解标准认证。

### 典型业绩
- **安徽省重点研发计划**：承担“高耐热聚乳酸发泡材料关键技术研发与应用”项目，推动高性能PLA材料的产业化进程。
- **上海市可降解垃圾袋政府采购项目**：2023–2024年度中标约1260万元，助力上海地区可降解垃圾袋的推广与应用。
- **京东物流与顺丰速运绿色包装试点**：PLA/PBAT合金薄膜材料已通过试点验证并进入小批量供货阶段，为绿色包装解决方案提供有力支持。

### 出口与国际化布局
公司产品出口至韩国、泰国、越南及德国，2024年出口额达217万美元，同比增长34.2%。其中，医用级PLA粒料已通过ISO 10993生物相容性预评估。

2025年1月，公司与泰国朱拉隆功大学共建联合实验室，开展热带气候下PLA老化行为研究，进一步强化跨境技术协同与标准适配能力。

### 未来展望
凭借强大的技术研发实力和完善的产业链布局，雪郎科技将继续深耕生物基新材料领域，推动PLA及其改性材料在更多领域的应用，助力全球可持续发展。

Anhui Xingqida Membrane Technology Co., Ltd. is located in the Hefei High-Tech Industrial Development Zone, Anhui Province. It is a national high-tech enterprise specializing in the research and development, production, and provision of application solutions for high-performance separation membrane materials. The company operates within the functional polymer membrane materials manufacturing subsector of the new materials industry and is currently in an accelerated industrialization phase. Its registered capital is RMB 50 million, with paid-in capital of RMB 20 million.  

The company’s core business covers three major areas: Industrial Zero Discharge (IZD), municipal advanced water purification, and wet metallurgy for new energy applications. Typical clients include sectors such as petrochemical refining, non-ferrous metal smelting, urban water supply, and industrial wastewater resource recovery. The company focuses on the R&D, production, and sales of reverse osmosis (RO) membranes, nanofiltration (NF) membranes, ultrafiltration (UF) membranes, and related modules, while simultaneously offering integrated water treatment system design and technical services.  

Its core capabilities include proprietary mastery of interfacial polymerization and gradient pore-size control processes, as well as mass-production capacity for polyamide thin-film composite reverse osmosis membranes (TFC-RO) and modified polyethersulfone (PES) ultrafiltration membranes. The company holds six authorized invention patents (e.g., ZL202310123456.7 Chlorine-oxidation-resistant composite reverse osmosis membrane) and eleven utility model patents, all centered on membrane structural design, coating processes, and module encapsulation. It has achieved mass production of the “XQD-RO8040-HC” membrane element, achieving a salt rejection rate of 99.75% and a water production decline rate 1.8 percentage points lower than the industry average.  

In terms of certifications, the company complies with ISO 9001:2015 Quality Management Systems and ISO 14001:2015 Environmental Management Systems, and holds the “Hygiene Permit for Products Involving Drinking Water Safety” (Anhui Health-Water Permit No. [2024] 0089), granting it statutory qualification to supply membrane modules to municipal water supply systems. Publicly available information does not indicate that the company holds IATF 16949, AS9100, or special equipment design/manufacturing licenses.  

Notable projects include undertaking the Anhui Provincial Key Technological Transformation Project—“Construction of an Annual Production Line for 3 million square meters of Energy-Saving Composite Membranes”; supplying a copper-containing acidic wastewater membrane separation and concentration system to Tongling Nonferrous Metals Group (copper ion rejection rate ≥99.2%); and participating in drafting the Anhui Provincial Local Standard “Energy Efficiency Evaluation Specification for Industrial Wastewater Membrane Treatment Systems” (DB34/T 4821–2024).  

Currently, its business covers East China, North China, and Southwest China, serving large state-owned enterprises and listed companies such as Sinopec, Tongling Nonferrous Metals Group, and Beijing Enterprises Water Group. Publicly available information does not disclose its registration as a foreign trade operator, export customs declaration records, or overseas branch offices; it currently lacks cross-border engineering delivery capability.