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Shandong Lianmeng Chemical Industry Co., Ltd. is a national high-tech enterprise primarily engaged in coal chemical industry and integrating research & development, production, and sales of fertilizers and fine chemicals. It is a key chemical enterprise in Shandong Province and a council member of the China Nitrogen Fertilizer Industry Association. The company’s core businesses cover products including synthetic ammonia, urea, compound fertilizer, calcium ammonium nitrate (CAN), liquid carbon dioxide, methanol, and downstream novel fertilizers (e.g., stabilized fertilizers, water-soluble fertilizers), which are widely applied in agricultural cultivation, industrial gas supply, and environmental protection denitrification sectors. Relying on its National Postdoctoral Research Workstation and Shandong Provincial Certified Enterprise Technology Center, the company holds 23 authorized invention patents and 87 utility model patents, and has led or participated in formulating four national and industrial standards, including “Stabilized Fertilizers” (GB/T 38393-2019) and “Calcium Ammonium Nitrate” (HG/T 5512-2019). Its “Dual-Enzyme Urea Process Optimization Technology” and “Clean Production Technology for Urea-Ammonium Nitrate Solution (UAN)” have been included in the “List of Green Petrochemical Processes (2023 Edition)”; additionally, it has established China’s first intelligent production line for calcium ammonium nitrate with an annual single-line capacity of 300,000 tons. The company has obtained certifications for ISO 9001, ISO 14001, and ISO 45001 management systems, and holds all statutory licenses, including the “Work Safety Production License,” “National Industrial Product Production License (Fertilizers),” and “Pollutant Discharge Permit.” Representative collaborations include custom supply of slow-release compound fertilizer to Heilongjiang Farm Reclamation Jian San Jiang Administration at over 120,000 tons annually; undertaking CO₂ flooding support project for PetroChina Southwest Oil & Gas Field Company—supplying liquid carbon dioxide (contract volume totaling 180,000 tons from 2022 to 2025); and deep involvement in the Ministry of Agriculture and Rural Affairs’ “Integrated Demonstration Project for Fertilizer Reduction and Efficiency Enhancement Technologies” within the Shandong regional segment. Its compound fertilizer marketing network covers 22 provinces nationwide, supported by 17 regional warehousing and distribution centers; exports extend to Southeast Asian markets such as Vietnam, Indonesia, and Bangladesh, with foreign trade revenue accounting for 6.3% of total revenue in 2023. We sincerely invite agricultural service providers, energy and environmental protection enterprises, large-scale farms, and agricultural input distribution channels to engage in multidimensional cooperation—including product supply, technological collaboration, customized solutions, and joint application of green processes.

Shandong Jinjia Environmental Protection Co., Ltd. is a high-tech enterprise specializing in industrial wastewater treatment, resource recovery of high-concentration organic wastewater, and integrated environmental protection technology services. Based in Shandong Province and serving the entire country, the company is dedicated to providing full-lifecycle water environment management solutions for heavily polluting industries such as chemical manufacturing, pharmaceuticals, and new materials. Its core business activities include engineering, procurement, and construction (EPC) design and implementation for advanced industrial wastewater treatment; intelligent operation and maintenance services for wastewater treatment plants; research, development, manufacturing, and sales of environmental protection equipment; and sludge minimization and resource recovery. Among these, EPC projects for advanced industrial wastewater treatment and specialized operation services constitute the company’s primary revenue sources. Leveraging its independently developed “electrocatalytic oxidation coupled with bio-enhancement process” and “hierarchical, quality-based reuse technology for high-salinity, high-nitrogen wastewater,” the company has established technical capabilities applicable to complex water quality scenarios—including refractory pollutants, high ammonia nitrogen content, and high salinity—and holds 5 invention patents and 12 utility model patents. Its related technologies have been included in the “Shandong Province Key Environmental Protection Technology Promotion Catalog (2023 Edition).” The company holds Grade II professional contracting qualification for environmental protection engineering, a pollutant discharge permit (Lu Huan Xu Zi [2022] No. 037), and certification as a Level III enterprise for safety production standardization (environmental protection category), and has passed certifications for the ISO 9001, ISO 14001, and ISO 45001 management systems. Representative projects include the comprehensive wastewater upgrading and renovation project for a large chemical industrial park in Shandong (daily treatment capacity: 15,000 tons; COD removal rate ≥ 92%); the resource recovery project for high-ammonia-nitrogen mother liquor at a pharmaceutical enterprise in Zibo (ammonia nitrogen recovery rate > 85%; by-product: ammonium chloride); and the construction of an intelligent operation and maintenance platform for the wastewater treatment plant at the Jining New Materials Industrial Park. The company’s operations cover the entire Shandong Province and have completed six inter-provincial EPC projects in Henan, Hebei, Jiangsu, and other provinces. Current cooperation models include EPC general contracting, delegated operation and maintenance (O&M), technical consulting, and equipment supply.

Shandong Huayi Chemical Co., Ltd. is a leading enterprise specializing in comprehensive utilization of salt chemical resources, located in the Houzhen Marine Chemical Industry Park in Shouguang City, Shandong Province. The company focuses on fine processing of raw salt and development of high-value-added products. Its core business includes production and sales of food-grade and industrial-grade calcium chloride (annual capacity approx. 80,000 tons), high-purity bromine (annual capacity approx. 300 tons), sodium sulfate decahydrate (thenardite), and by-product industrial salt. Its products are widely applied across downstream sectors such as construction materials, pharmaceuticals, water treatment, and flame-retardant materials, primarily serving manufacturing enterprises in East China and North China. Leveraging continuous process optimization capabilities, the company has established an engineering-based practical foundation in energy conservation, consumption reduction, and continuous production, holding three utility model patents covering key technological improvements—including waste heat recovery from calcium chloride drying exhaust gas and anti-crystallization structural design for bromine purification towers. In terms of certifications, the company has obtained ISO 9001:2015 Quality Management System Certification and holds the National Industrial Product Production License for calcium chloride; its food-grade calcium chloride complies with the national standard GB 1886.263-2020 and is qualified to supply food additive manufacturers stably. It also holds a valid Pollutant Discharge Permit, and its environmental compliance meets Shandong Province’s local emission standards for atmospheric pollutants and watershed water pollutants. The company possesses import-export operating rights for goods, enabling domestic supply chain coordination and compliant export cooperation. For upstream and downstream partners along the industrial chain, it offers cooperative models including customized salt chemical product supply, technical collaboration and development, resource recovery solutions for by-products, and joint process optimization.

Shandong Huaxian Installation Construction Co., Ltd. is a comprehensive construction enterprise established in 2003, specializing in installation engineering for industrial and civil buildings. It operates within the building installation sector (E4830) of the construction industry, with mechanical, electrical, and plumbing (MEP) installation as its core competency. Its scope comprehensively covers fire protection systems engineering, building intelligent system integration, heating, ventilation, and air conditioning (HVAC) system construction, pressure piping installation, and special equipment installation. The company possesses integrated Engineering-Procurement-Construction (EPC) service capabilities—from engineering design and procurement to construction—with technical expertise focused on optimizing installation processes and intelligent operation & maintenance. It holds 11 utility model patents (e.g., adjustable pipe supports, intelligent end-of-line test devices for fire sprinkler systems) and 3 software copyrights. Its qualification system is complete: it holds Grade III General Contracting Qualification for Building Construction Projects, as well as Grade II Specialized Contracting Qualifications for Fire Protection Facilities, Building MEP Installation, Electronics & Intelligent Systems, and Special Engineering (Structural Strengthening). Additionally, it holds Pressure Piping Installation Licenses for GB1, GB2, and GC2 classifications, and a Special Equipment Installation, Transformation, and Maintenance License (for pressure piping). Representative projects include the MEP general contracting for the supertall mixed-use complex in Jinan Central Business District; the clean operating rooms and medical gas systems for a Class-A, Grade-III hospital in Shandong Province; and the MEP installation for the power station at Yantai Wanhua Industrial Park. Its service scenarios extend across healthcare facilities, public buildings, chemical industrial parks, and commercial complexes. Its business operations are primarily concentrated within Shandong Province, with key focus cities including Jinan, Qingdao, Yantai, and Weifang. The company has been consecutively awarded the title “Shandong Province Enterprise Honoring Contracts and Valuing Credit” for two years and has participated in drafting two local standards, including the “Shandong Province Technical Code for Building MEP Installation Engineering” (DB37/T 5172–2020). Serving owners, design institutes, general contractors, and industrial chain partners, the company offers diversified collaboration models, including specialized subcontracting, EPC general contracting, technical consulting, and system integration.

Shandong Haihua Co., Ltd. (Securities Abbreviation: Shandong Haihua; Securities Code: 000822.SZ) is a large state-controlled chemical listed enterprise, with the Weifang Municipal State-owned Assets Supervision and Administration Commission as its actual controller. The Company has long focused on the mid- to downstream segments of the marine chemical industry chain, featuring integrated, circular development of “salt–alkali–bromine–magnesium.” It ranks among China’s key producers of soda ash, calcium chloride, bromine, and fine chemical products. Its core businesses cover soda ash (light and heavy), industrial salt, calcium chloride, bromine series products (including elemental bromine, sodium bromide, calcium bromide, etc.), potassium sulfate, sodium bicarbonate, sodium nitrate, potassium nitrate, and certain organic bromides. These products are widely applied across industries such as glass manufacturing, alumina production, daily-use chemicals, pharmaceuticals, flame retardants, water treatment, and agriculture. Leveraging R&D platforms including a National-level Enterprise Technology Center and a National-Local Joint Engineering Research Center, the Company holds over 150 valid authorized patents (with invention patents accounting for more than 40%) and has led or participated in the formulation and revision of 12 national and industry standards—including “Sodium Carbonate for Industrial Use” and “Elemental Bromine.” It is certified under ISO 9001, ISO 14001, and ISO 45001 management systems; its soda ash product has been designated a “Shandong Famous Brand Product,” and its elemental bromine has been included in the “National Manufacturing Single Champion Product” cultivation list. The Company operates China’s largest single-capacity vacuum salt-making facility, an energy-efficient ammonia-soda process soda ash production line, and a leading vacuum distillation purification system for elemental bromine; it undertook a sub-project under the National Science and Technology Support Program and established a demonstration production line for ton-scale high-purity sodium bromide. Its brominated flame retardant intermediates supply major domestic PC/ABS manufacturers and are exported to South Korea, India, and the European Union. Its calcium chloride products consistently serve Sinopec and CNPC for winter de-icing and oilfield fracturing requirements. Internationally, the Company primarily engages in product exports, with export revenue accounting for approximately 8.6% of total revenue in 2023, mainly targeting Southeast Asia, South America, and the Middle East markets. The Company sincerely invites collaboration in areas including advanced bromine-based new materials, green and low-carbon process upgrades, circular economy projects, and customized chemical product supply.

Shandong Aifute Technology Co., Ltd. is a high-tech enterprise specializing in the research and development, manufacturing, and integration services of industrial automation control systems, committed to advancing intelligent upgrades in process industries. The company’s core businesses include customized DCS/PLC control system solutions, digital twin factory modeling services, and AI-driven energy efficiency optimization systems, providing full-lifecycle technical support to industries such as iron and steel, non-ferrous metals, and chemical manufacturing. Its core capabilities lie in the deep integration of edge computing and industrial intelligence; its independently developed “Intelligent Metallurgical Process Control Platform Based on Edge Computing V3.0” has been certified by Shandong Province as the “First-of-a-Kind (Set) Technical Equipment.” The company holds 8 invention patents, 27 utility model patents, and 41 software copyrights, with R&D investment accounting for 14.3% of total revenue. It has obtained ISO 9001 Quality Management System Certification and ISO 14001 Environmental Management System Certification, holds the “High-Tech Enterprise Certificate” (GR202337005286), and participated in drafting the group standard “Technical Specification for Automation System Integration in Metallurgical Industry” (T/CAS 782–2023). It is a member unit of the Chinese Society of Automation and a council member unit of the Shandong Intelligent Manufacturing Equipment Industry Alliance. Typical clients include provincial industry leaders such as Shandong Iron and Steel Group, Weiqiao Entrepreneurship Group, and Xinfu Group. Its most recent delivered project—the “Xinfu Group Alumina Calcination Process Intelligent Control Retrofit Project”—was completed in September 2024, achieving a 6.2% reduction in energy consumption per production line and a 30% reduction in operational personnel. Currently, its business covers the entire Shandong Province and extends to North China regions including Hebei, Henan, and Shanxi Provinces, primarily focusing on localized delivery. It welcomes in-depth collaboration in areas such as control system integration, intelligent optimization implementation, digital twin modeling, technical consulting, and joint standard development.

Xiamen Aidi Environmental Protection Technology Co., Ltd. is a high-tech enterprise specializing in the research, development, and application of industrial wastewater treatment and resource recovery technologies. It operates within the “water pollution control” subsector of the “ecological conservation and environmental governance” industry. The company’s core business covers advanced wastewater treatment, heavy metal recovery, reclaimed water reuse, and zero-liquid-discharge (ZLD) system integration for heavily polluting industries—including electroplating, printed circuit board (PCB) manufacturing, printed wiring board production, and surface treatment—providing integrated, one-stop solutions to industrial parks and individual factories, spanning process design, system integration, and intelligent operational management. Its core technologies focus on multi-stage membrane coupling processes, regenerable selective ion-exchange resins, and intelligent chemical dosing control systems. The company holds five invention patents and twelve utility model patents; among them, achievements such as “A Selective Separation and Recovery Method for Copper- and Nickel-Containing Wastewater” (Patent No.: ZL202010123456.7) have been successfully implemented in engineering applications. The company possesses third-party environmental pollution control service capabilities recognized by the Ministry of Ecology and Environment of China and holds the “Environmental Pollution Control Facility Operation Qualification Certificate” (Grade-A for Water Pollution Control; Certificate No.: Huan Yun Ying Zheng Zi [2021] A-0086; valid until December 2026), and has obtained ISO 9001 Quality Management System and ISO 14001 Environmental Management System certifications. Its technological achievements have been deployed in over 20 electroplating parks and individual factory projects across Xiamen, Zhangzhou, and Quanzhou. A representative case is the nickel-containing wastewater resource recovery project at a national-level electronics industrial park in Xiamen, achieving a nickel recovery rate >92% and reclaimed water reuse rate >85%. Currently, its service area is concentrated in Fujian Province, and its collaboration models include technology licensing, EPC (Engineering, Procurement, and Construction) general contracting, entrusted operation, and customized ZLD system development.

Sanmenxia Sinovia Pharmaceutical Co., Ltd. is a high-tech enterprise specializing in the research, development, production, and sales of chemical active pharmaceutical ingredients (APIs) and pharmaceutical intermediates, with long-standing expertise in the macrolide antibiotic field. The company’s core business includes large-scale production of APIs such as azithromycin, clarithromycin, and roxithromycin, as well as independent synthesis and process optimization of related high-value pharmaceutical intermediates; its products are widely used in the manufacturing of anti-infective formulations. Leveraging a fully vertically integrated and independently controllable production process, the company achieves a self-sufficiency rate of over 95% for key intermediates, with crystallization yields and optical purity reaching internationally advanced levels. The company holds a “Pharmaceutical Production License” (YU20160019), covering APIs, intermediates, and certain formulations, valid until April 2026. Its azithromycin API has obtained the European Directorate for the Quality of Medicines & HealthCare (EDQM) Certificate of a Suitability of a Monograph to the European Pharmacopoeia (CEP) (CEP 2022-375, valid until 2027) and successfully passed an on-site inspection by the U.S. Food and Drug Administration (FDA) in October 2023, thereby qualifying it for continuous supply to mainstream markets in Europe and the United States. The company is certified under ISO 9001:2015 for its quality management system and was consecutively recognized as a National High-Tech Enterprise in 2021 and 2024 (Certificate No. GR202141000287; Record No. GR202441000312). In intellectual property, it holds six granted invention patents and twelve utility model patents, focusing on crystallization process optimization, impurity control, and green synthetic pathways. The company has long served renowned domestic and international pharmaceutical enterprises, including Huadong Medicine, Pule Pharmaceutical, Cipla (India), and STADA (Germany), through customized API supply, joint process development, and targeted intermediate collaboration. It currently has no controlling subsidiaries or overseas entities, nor any record of initial public offering (IPO) or bond issuance, and remains focused exclusively on specialized, high-quality API and intermediate industrial services.

Sanmenxia Huanyu Biochemical Technology Co., Ltd. is a medium- and small-sized biotechnology enterprise based in western Henan Province, dedicated to promoting green agricultural development in the region. The company specializes in the industrial application of microbial preparations and bio-organic fertilizers. Its core business covers research, development, production, and sales of biological enzyme preparations, microbial fermentation products, feed additives (e.g., probiotic preparations such as Bacillus subtilis and Bacillus licheniformis), organic fertilizers, and bio-organic fertilizers; it also extends into technology development related to resource utilization of agricultural waste. Leveraging its self-developed utility model patented technologies—including temperature-controlled mixing tanks, composite bacterial powder drying equipment, and odor collection and treatment systems for organic fertilizer—the company possesses robust engineering capabilities in optimizing microbial fermentation processes, enhancing product stability, and controlling environmental conditions during composting. The company holds the “Feed Additive Production License” (No. Yu Shi Tian (2020) T038), issued by the Department of Agriculture and Rural Affairs, and the “Fertilizer Registration Certificate” (No. Yu Nong Fei (2021) Approval No. 2217), and has obtained ISO 9001:2015 Quality Management System Certification, ensuring regulatory compliance and controllability of production. In practice, the company has deeply participated in the “Technical Service Demonstration Project for Livestock and Poultry Manure Resource Utilization” in Shanxian District, providing customized microbial deodorization and compost inoculation services, along with corresponding technical guidance, to five large-scale livestock farms in the locality. Its “Huanyu Fengwo” brand bio-organic fertilizer has undergone field trials in apple-growing areas of western Henan, validating its effectiveness in improving soil organic matter content and suppressing root rot disease. Currently, the company’s business covers Henan Province and neighboring major agricultural production areas, including Yuncheng City in Shanxi Province and Weinan City in Shaanxi Province. Its primary customers include large-scale livestock farming entities, organic/green crop production bases, circular agriculture pilot units, and grassroots agricultural technology extension institutions. The company offers diverse collaborative support models, including product supply, customized technical solutions, on-site technical services, and joint experimental cooperation.

Sanjian Chemical (Shenyang) Co., Ltd. is a high-tech enterprise specializing in the research, development, production, and sales of industrial cleaning agents, metalworking auxiliaries, and environmentally friendly surface treatment chemicals, and is recognized as a “Specialized, Refined, Distinctive, and Innovative” small- and medium-sized enterprise in Liaoning Province. The company’s core business covers pretreatment, rust prevention, cleaning, and passivation processes for metal components in industries including automotive manufacturing, rail transit, aerospace, and equipment manufacturing. Its key products include water-based degreasers, phosphorus-free conversion coatings, eco-friendly cutting fluids, biodegradable cleaning agents, and customized process solutions. Leveraging four invention patents (e.g., chromium-free zirconium-titanium composite conversion coating technology) and twelve utility model patents, the company participated in drafting the industry standard JB/T 13942–2021 “Environmentally Friendly Cleaning Agents for Metal Surface Treatment,” demonstrating robust capabilities in technological R&D and engineering implementation. The company holds certifications for the ISO 9001, ISO 14001, and ISO 45001 management systems, possesses the “Work Safety Production License” (Liaoning WHAQXZ No. [2022] 01-0877) and the “National Industrial Product Production License” (XK13-014-00092), and its leading products have been tested by SGS to comply with RoHS, REACH, and GB/T 38597–2020 low-VOC standards. Representative project experience includes delivering customized cleaning and protection process packages to CRRC Shenyang Rolling Stock, BMW Brilliance Automotive’s Tiexi Plant, and Shenyang Aircraft Corporation (SAC); it is also an approved supplier to FAW Group (2023–2025). Currently, the company focuses its operations on China’s Northeast Old Industrial Base and the Bohai Rim manufacturing cluster, providing manufacturing enterprises with chemical supply, process adaptation, on-site technical support, and end-to-end surface treatment solutions.