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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.

Quanjiao Koolide Electronic Materials Co., Ltd. is a high-tech enterprise specializing in the research, development, production, and sales of electronic-grade chemical reagents, positioned as a key supplier of wet electronic chemicals for the semiconductor and broader semiconductor industries. The company’s core business covers high-purity etchants, cleaning solutions, and developers—complementary chemicals for electronic specialty gases—required by industries such as integrated circuits, display panels (LCD/OLED), LEDs, and advanced packaging. Its products meet the SEMI C12 purity standard and possess ppb-level control capability for metallic impurities. Leveraging independent R&D capabilities, the company has developed core technologies including formulation stability control, deep removal of trace impurities, and process compatibility adaptation, holding three invention patents and five utility model patents. The company operates a standardized production workshop compliant with ISO 9001:2015 and holds the following licenses: Work Safety Production License (Anhui WH Safety Permit No. [2023] 08-0047), Hazardous Chemicals Business License (Anhui Chuzhou Quanjiang Hazardous Chemicals Business Permit No. [2023] 0062), and Pollutant Discharge Permit (No. 91341124MA8PQJYF1C001V). Its Phase I project—a 3,000-ton-per-year electronic-grade wet electronic chemicals production facility—officially commenced operations in June 2023 and passed environmental acceptance inspection (Quan Environmental Acceptance No. [2023] 31). Its products have been incorporated into the supply chains of leading domestic wafer fabs and panel manufacturers, including SMIC, CXMT, and BOE. The company is designated as a key project under Anhui Province’s “Dual Recruitment and Dual Introduction” initiative and is supported as a new materials enterprise under the “Chuzhou Municipal 14th Five-Year Plan for Strategic Emerging Industries.” In 2024, it was selected for Anhui Province’s list of specialized, sophisticated, distinctive, and innovative small and medium-sized enterprises (SMSEs). Serving upstream and downstream customers across the industrial chain, the company offers customized formulation development, small-batch validation, large-scale stable supply, and technical collaboration services.

Qinghai Yihua Chemical Co., Ltd. is a basic raw materials producer specializing in chlor-alkali chemical manufacturing, controlled by Hubei Yihua Group. The company focuses on an integrated industrial chain covering chlor-alkali production, acetylene generation, and polyvinyl chloride (PVC) manufacturing. Its core business encompasses research, production, and sales of calcium carbide, caustic soda, liquid chlorine, hydrochloric acid, PVC resin, as well as supporting processes such as limestone calcination and acetylene generation. Its products are widely applied in construction materials, agricultural films, medical device packaging, and chemical intermediates. The company possesses core technical capabilities including energy-saving and consumption-reduction technologies for calcium carbide furnaces, automatic control systems for acetylene generators, and resource-recovery treatment technologies for mercury-containing waste acid. It holds seven utility model patents; its low-mercury catalyst application technology has passed technical appraisal by the China Chlor-Alkali Industry Association; and it participated in formulating the group standard “Evaluation Requirements for Green Factories in the Calcium Carbide Industry.” The company has been included consecutively for three years (2021–2023) in Qinghai Province’s provincial green manufacturing demonstration list. It maintains complete qualifications, holding the National Pollutant Discharge Permit (No.: 91632222770084558K001V), the Hazardous Chemicals Production Safety Permit (Qing An Jian Wei Hua Sheng Xu Zi [2023] No. 003), and the Ministry of Industry and Information Technology’s official announcement confirming compliance with the Chlor-Alkali Industry Regulatory Conditions. It has also obtained certification for the three major management systems: ISO 9001, ISO 14001, and ISO 45001. Representative projects include the 300,000-ton-per-year PVC energy-saving technological upgrading project and the calcium carbide furnace gas purification and hydrogen recovery & utilization system, achieving a 12.6% reduction in comprehensive energy consumption per ton of PVC. Domestically, its sales cover the five northwestern provinces as well as Sichuan and Henan provinces; some PVC products serve Central Asian markets via the Lanzhou New Area Comprehensive Bonded Zone under the “domestic sale converted to export” model. We sincerely invite practical cooperation and joint implementation in areas including energy-saving technological upgrades, solid waste resource utilization, green factory construction, regional supply chain collaboration, and upstream-downstream cooperation across the chlor-alkali industrial chain.

Qinghai Salt Lake Yuanpin Chemical Co., Ltd. is a mixed-ownership chemical enterprise jointly established by Qinghai Yanhu Industrial Co., Ltd. (Stock Code: 000792) and subsidiaries of Sinochem Group. The company is positioned at a critical link in the comprehensive utilization industrial chain of salt lake resources, focusing on high-value conversion of magnesium resources—such as magnesium chloride and magnesium hydroxide—byproducts generated during potassium fertilizer production. Its core business covers research, development, manufacturing, and sales of premium flame retardants (e.g., highly dispersible nano-magnesium hydroxide and modified products), magnesium-based functional materials, and deep-processed magnesium resource products derived from post-lithium-extraction operations in salt lakes. These products are widely applied in green flame-retardant and lightweight applications, including wires and cables, PC/PP composite materials, and structural components for new-energy batteries. Leveraging independently developed low-temperature controllable precipitation technology and surface organic/inorganic synergistic modification technology, the company overcomes traditional bottlenecks of severe agglomeration and poor compatibility in magnesium hydroxide. Its products achieve a particle size D90 ≤ 1.8 μm and surface activation degree ≥ 92%, and have been granted four Chinese national invention patents (e.g., CN114XXXXXXB). The company has obtained ISO 9001:2015 Quality Management System Certification and ISO 14001:2015 Environmental Management System Certification; holds a Work Safety Production License ((Qingxi) WH Anxukezi [2023] No. 008) and a National Industrial Product Production License (for flame retardants); and its products have passed SGS testing, complying with EU RoHS and REACH regulatory requirements. The Phase I project—a 50,000-ton-per-year production facility for premium magnesium hydroxide flame retardants—has entered stable operation. Products are supplied in bulk to leading wire-and-cable enterprises such as Far East Cable and Hengtong Optic-Electric, as well as PC/PP composite material manufacturers, and have been included in shortlists of flame-retardant modified material suppliers for certain battery structural components used by BYD and Contemporary Amperex Technology Co., Limited (CATL). Grounded in Qinghai Province’s salt lake resource endowment, the company closely aligns with Qinghai Province’s “14th Five-Year Plan” for high-quality manufacturing development, specifically targeting refined deep processing of magnesium resources. Its market coverage focuses primarily on end-user customers in East and South China. Relying on Qinghai Salt Lake’s logistics channels and Sinochem International’s distribution network, the company expands nationwide cooperation and provides customized magnesium-based functional material solutions and supply-chain collaboration support for emerging sectors including new materials, new energy, and advanced manufacturing.