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Jereh Oil & Gas Engineering Co., Ltd. (hereinafter referred to as "Jereh Natural Gas") is a wholly-owned subsidiary of Yantai Jereh Petroleum Services Group Co., Ltd., with a registered capital of 1 billion yuan. With nearly 20 years of project accumulation and technological development in the oil and gas sector, we have achieved full industry chain development in natural gas, with business coverage spanning natural gas equipment manufacturing, gas power generation equipment, natural gas processing engineering, and terminal utilization. We can provide integrated natural gas industry solutions from feasibility planning, equipment design and manufacturing, project management, to station operation and maintenance as well as after-sales services.

Jereh Natural Gas invests no less than 5% of annual sales revenue in R&D each year. After more than two decades of accumulation, Jereh Natural Gas has developed full lifecycle management capabilities from equipment R&D and production to delivery, with over 180 invention patents applied for across the entire industry chain.

Jereh Natural Gas provides customized designs based on customer site conditions, offering integrated natural gas industry solutions from feasibility planning, equipment design and manufacturing, project management, to station operation and maintenance as well as after-sales services, ensuring safe and stable project operation.

Jereh Natural Gas always adheres to a customer-centric approach, responding promptly to customer needs, and comprehensively solving various challenges faced by customers while eliminating potential risks in equipment operation and maintenance. 80% of our team members hold international HSE certificates, special operation permits, project manager certificates, and other credentials; over 70% of our operational personnel have more than five years of service experience.

Survey and Design Qualifications: Engineering design/consulting/management qualifications, engineering survey qualifications, petroleum and natural gas (offshore oil) industry (oil and gas processing, oilfield surface) engineering design qualifications, pressure piping (vessel) design qualifications;

Management Systems: American Petroleum Institute API Q1, Quality Management System ISO 9001, ASME Quality Assurance System, TSG Quality Assurance System;

Manufacturing Qualifications: Canadian CRN registration/CWB steel structure welding qualification, American Welding Society CWI certification, ASNT non-destructive testing society certification, EU CE certification, MD/ATEX/PED, DNV, DOT, CDOT, SASO, CU-TR, and other certifications;

As early as 2004, Jereh placed great emphasis on product innovation and patent application protection, especially for core products in the natural gas sector, investing no less than 5% of annual sales revenue in R&D each year. In the future, we will continue to focus on the competitive advantages brought by innovation and patents, firmly pursuing the path of R&D and innovation, so that Jereh Natural Gas can win in the future.

Jereh Group was founded in 1999 as an innovation-driven diversified industrial group. Its businesses span petroleum industrial clusters, natural gas industrial clusters, data center and power industrial clusters, and new energy industrial clusters, committed to providing customers with competitive, safe, and reliable products, services, and systematic solutions.

Since its founding, we have taken sincerity as the cornerstone of Jereh's corporate culture. While continuously creating value for customers, we also contribute honesty, kindness, and respect to society. Today, our business operates in over 70 countries and regions, with more than 9,000 outstanding employees. We are open to cooperation with global partners, working together to build a more efficient and sustainable future.

Currently, Jereh Group has two listed companies (Jereh Stock 002353, Deshi Stock 301158). It is a National Technology Innovation Demonstration Enterprise, National Intellectual Property Demonstration Enterprise, National Service-Oriented Manufacturing Demonstration Enterprise, and a National Quality Benchmark enterprise. The Group has 11 national high-tech enterprises and 1 National Pilot Demonstration Enterprise for Integration of New-generation Information Technology and Manufacturing. Driven by innovation, it has established more than 10 national and provincial-level scientific and technological innovation platforms, including a National Recognized Enterprise Technology Center, National Industrial Design Center, Shandong Technology Innovation Center, Shandong Manufacturing Innovation Center, and Shandong Engineering Research Center. It has 3 National Service-Oriented Manufacturing Demonstration Enterprises, 2 Shandong Science and Technology Leading Enterprises, and 3 Shandong Gazelle Enterprises. To date, it has undertaken over 90 national and local research projects, with 23 technological achievements reaching international leading standards, 11 achievements receiving provincial-level science and technology progress awards, and 4 achievements receiving provincial-level industrial design gold awards.

Jiangsu Jiehui Intelligent Technology Co., Ltd. is a national high-tech enterprise specializing in intelligent logistics system integration and industrial automation solutions, dedicated to providing end-to-end intelligent warehousing and flexible production line upgrade services for clients across manufacturing, pharmaceutical distribution, and new energy industries. The company’s core businesses encompass research & development and manufacturing of intelligent warehousing equipment, development of logistics information system software, industrial robot system integration, and overall planning and implementation of intelligent factories. Its core competencies focus on key technological areas including stacker crane control algorithms, multi-AGV coordinated scheduling systems, and digital twin–based warehouse simulation platforms. The company has developed the independently controllable software platform “JH-LogiCore Intelligent Logistics Operating System,” which has achieved large-scale application in sectors such as pharmaceuticals, new-energy batteries, and fast-moving consumer goods (FMCG). The enterprise holds the “High-Tech Enterprise Certificate” (GR202332008765) and certifications for the ISO 9001/14001/45001 management systems; it also possesses qualifications for professional contracting of building mechanical and electrical installation engineering (Level III) and electronic & intelligent engineering (Level II). As of the end of 2025, the company holds 12 authorized invention patents, 47 utility model patents, and 63 software copyrights. Representative projects include the fully automated electrode cell automated storage and retrieval system (AS/RS) at CATL’s Jiangsu base, the Huaxia Pharmaceutical East China Intelligent Sorting Center, and the intelligent warehousing upgrade project for Jiangsu Hengrui Pharmaceuticals—all delivered projects having passed final customer acceptance. The company’s business operations are concentrated primarily in the East China region, with its main customers comprising large domestic manufacturing enterprises, pharmaceutical groups, and third-party logistics service providers. The company offers industry partners multiple collaboration models—including system integration, joint development, co-construction of projects, and technical empowerment—and actively participates in Jiangsu Province’s Key R&D Program, “Research on Key Technologies for Lightweight AGV Cluster Scheduling Oriented Toward Flexible Manufacturing,” driving iterative advancement and practical deployment of core intelligent logistics technologies.

Dalian Changxing Island Port Investment and Development Co., Ltd. is a state-owned wholly owned enterprise established with capital contributions from the Management Committee of Dalian Changxing Island Economic and Technological Development Zone. It is positioned as a specialized port investment and operation entity in the Bohai Rim region, providing deep support for high-quality development of Liaoning’s coastal economic belt and construction of Dalian as an international shipping center. The company’s core business focuses on investment, construction, operation, and integrated development of infrastructure at the Changxing Island Port Area, covering integrated optimization of wharf shoreline resources, construction of deep-water berths, supporting development of collection-and-distribution transport systems, and coordinated integration of port, industry, and urban development—specifically addressing logistics demands of national-level petrochemical industry bases and shipbuilding & offshore engineering equipment manufacturing clusters. Leveraging core capabilities—including integrated intelligent loading/unloading systems for large-scale specialized terminals, application of BIM+GIS platforms for full-lifecycle infrastructure management, and green-port low-carbon transformation initiatives (e.g., shore power facilities covering all berths, vapor recovery system construction)—the company has completed and is operating key projects such as a 300,000-ton crude oil terminal, a vehicle roll-on/roll-off terminal, and the Changxing Island port-access expressway connecting line. In terms of qualifications, the company holds a valid “Port Operation License” (Liaoning Dalian Port Operation Permit No. 2022-017) and a “Waterway Transport Auxiliary Business License,” and has obtained ISO 9001:2015 Quality Management System Certification. Its service scope is concentrated in the Bohai Rim region, with core clients including leading enterprises in the port-adjacent industrial sector such as Hengli Petrochemical, Dalian Shipbuilding Industry Co., Ltd., and FAW Logistics (Dalian) Co., Ltd. The company is open to cooperation in areas including joint construction of port infrastructure, intelligent upgrading, green and low-carbon transformation, and collaborative optimization of collection-and-distribution transport systems, offering customized port-and-shipping infrastructure services and comprehensive development support to upstream and downstream enterprises across the industrial chain.

Shandong Chuanyi Water Treatment Technology Co., Ltd. is a high-tech enterprise specializing in water treatment technology research and development, equipment manufacturing, and system integration services, dedicated to efficient water resource utilization and pollution control in industrial and municipal sectors. The company’s core businesses include advanced industrial wastewater treatment, reclaimed water reuse systems, zero-liquid-discharge (ZLD) for high-salinity wastewater, upgrading and retrofitting of municipal wastewater treatment plants, and construction of intelligent water management platforms. It primarily serves clients in water-intensive and high-emission industries such as chemical manufacturing, pharmaceuticals, textile printing and dyeing, and food processing. Its technical approach centers on an integrated process chain comprising physical-chemical pretreatment, membrane separation (including DTRO, NF, and RO), and evaporation-crystallization, complemented by an independently developed PLC+SCADA intelligent control system, enabling engineering-scale application for highly challenging wastewater containing salts and organic compounds. The company holds 5 invention patents, 23 utility model patents, and 12 software copyrights; among these, the “Corrosion-Resistant Electro-Catalytic Oxidation Device” and the “Multi-Stage Concentration High-Salinity Wastewater MVR Evaporation-Crystallization Control System” have achieved industrialized application. In terms of certifications, the company has obtained ISO 9001, ISO 14001, and ISO 45001 management system certifications; holds Grade III qualification for environmental protection engineering contracting; possesses an A1-level special equipment manufacturing license for pressure piping components; and has been certified as a Level III standardized enterprise for work safety (light industry sector). Its core products—the “CY Series Integrated Intelligent Water Purification Equipment” and the “CAO-ECM Electro-Catalytic Oxidation Reactor”—have been included in the “Shandong Province Key Energy-Saving and Environmental Protection Technologies and Equipment Recommended Catalog (2024 Edition).” Representative projects include: a 1,200 m³/day antibiotic wastewater zero-discharge demonstration project for a major pharmaceutical group in Shandong Province; Phase II AI early-warning module development for the intelligent water management regulatory platform in Weifang Binhai Development Zone Chemical Industry Park; and an 8,000 m³/day comprehensive wastewater treatment EPC project for a textile printing and dyeing industrial park in Hebei Province. Currently, the company’s business covers East China and North China regions—including Shandong, Hebei, Henan, Jiangsu, and Anhui provinces—and offers collaborative models including technology R&D, customized equipment supply, engineering procurement and construction (EPC) contracting, and intelligent water management system development, targeting industrial enterprises, industrial park administrative committees, design institutes, and EPC general contractors.

Jiangsu Hongchuan Electric Power Equipment Co., Ltd. is a high-tech enterprise specializing in the research and development, manufacturing, and system integration of intelligent power distribution and consumption equipment, positioned as a provider of intelligent upgrading solutions for county-level and urban power distribution networks. The company’s core business encompasses the design, manufacturing, and sales of power complete equipment, low- and medium-voltage switchgear, prefabricated substations, intelligent power distribution terminals, and power automation control systems. Its flagship products include the HX-series intelligent ring-main units, the HDP-series low-voltage intelligent distribution boxes, and the HDZ-3000 distribution network fault location terminal, all widely applied in new construction and retrofitting projects for power distribution networks. Leveraging its technical expertise in modular design, edge-side data acquisition, and integrated localized logic control, the company has obtained 12 utility model patents—including “A Low-Voltage Transformer District Topology Identification Device Based on LoRa” and “A Remote Status Monitoring System for Intelligent Ring-Main Units”—and 7 software copyrights. Its independently developed “HC-PowerGrid Intelligent Operation & Maintenance Platform for Power Distribution Equipment V1.0” supports full-lifecycle management of equipment. The company holds Grade III General Contracting Qualification for Mechanical and Electrical Engineering Construction and a Level-V License for Installation (Maintenance, Testing) of Electric Power Facilities, and has passed certifications for ISO 9001, ISO 14001, and ISO 45001 management systems. It participated in drafting the group standard “Technical Specification for Intelligent Terminal Equipment in County-Level Power Distribution Networks” (T/CEC 328–2023), which has been officially published and implemented. Representative projects include the Yangzhou City Hanjiang District Rural Power Grid Intelligent Transformation EPC Project (involving deployment of 37 intelligent distribution rooms and 126 intelligent ring-main units). The company consistently serves key regional energy clients such as Yangzhou Power Supply Company and Jiangsu Huadian Yangzhou Power Generation Co., Ltd. Its current business covers Jiangsu Province and surrounding areas in East China, offering equipment supply, technical solution support, and joint project implementation to grid companies, energy investors, EPC general contractors, and system integrators.

Wuxi Keyu Intelligent Engineering Co., Ltd. is a specialized intelligent engineering service provider focusing on smart buildings and intelligent security. Based in Wuxi and serving the Yangtze River Delta region, the company has long been committed to delivering full-lifecycle solutions—including design, construction, system integration, and operation & maintenance—for government agencies, educational institutions, medical facilities, commercial real estate, and medium-to-large manufacturing enterprises. Its core businesses encompass intelligent engineering design and construction; building intelligent system integration; security engineering design, construction, and maintenance; computer information system integration; mechanical and electrical equipment installation; as well as sales and technical services for network equipment, surveillance equipment, and building automation equipment. Leveraging its Grade II professional contracting qualification for electronic and intelligent engineering (issued by the Ministry of Housing and Urban-Rural Development), Grade I qualification for security technology prevention engineering design and construction in Jiangsu Province (issued by the Public Security Department of Jiangsu Province), and ISO 9001 Quality Management System Certification, the company ensures standardized, reliable, and consistently deliverable project execution. Representative projects include the comprehensive intelligent system upgrade of a Grade-A tertiary hospital in Xinwu District, Wuxi City (including an IBMS integrated platform); the low-voltage system renovation for the School of Internet of Things Engineering at Jiangnan University; the smart campus construction for a key secondary school in the Wuxi Economic and Technological Development Zone (covering digital broadcasting, video surveillance, electronic patrolling, integrated access control, and data center infrastructure); and security surveillance and access control system integration across multiple industrial parks. Contract values for these projects typically range from RMB 2 million to RMB 8 million, with project timelines concentrated between 2020 and 2024. Grounded in mature commercial systems (e.g., brands such as Hikvision, Dahua, Honeywell, and Tsinghua Tongfang), the company emphasizes customized integration and localized implementation capabilities, enabling collaboration across scenarios including new construction projects, intelligent retrofitting of existing buildings, targeted subsystem upgrades, and long-term operation & maintenance support.

Shandong Bestsun Environmental Protection Technology Co., Ltd. is a high-tech enterprise specializing in industrial exhaust gas treatment and comprehensive VOCs (volatile organic compounds) control, dedicated to providing customized environmental protection solutions for key industries such as petrochemicals, chemical manufacturing, pharmaceuticals, and coating applications. The company’s core business encompasses environmental protection technology development, research and manufacturing of environmental protection equipment, engineering general contracting for pollution control projects, and operation and maintenance services for environmental protection facilities. Its core competencies focus on the localization adaptation and system integration of mature technologies, including “zeolite rotor + RTO,” “activated carbon adsorption + desorption catalytic combustion,” and low-temperature plasma coupled with photocatalysis, offering full lifecycle service capabilities—from solution design and equipment manufacturing to installation/commissioning and long-term operation and maintenance. The company holds Class-B specialized design qualifications for environmental engineering (atmospheric pollution control engineering) and Grade-III professional contracting qualifications for environmental engineering projects; it has obtained ISO 9001 Quality Management System and ISO 14001 Environmental Management System certifications. It owns 12 utility model patents and 3 software copyrights covering key technological areas such as multi-stage adsorption structure optimization, intelligent desorption temperature control systems, and modular RTO furnace design. Representative projects include constructing a VOCs treatment system with an air handling capacity of 80,000 m³/h for a large rubber enterprise in Shandong Province, delivering an EPC service for a centralized activated carbon regeneration center for a chemical industry park in Weifang, and participating in the 2023 Shandong Provincial Demonstration Project for Deep VOCs Control in Key Industries. While primarily serving enterprises, industrial parks, and environmental protection regulatory authorities within Shandong Province, the company accommodates various collaboration models, including technical consulting, equipment supply, EPC engineering, and entrusted operations.

Zhongwai Jianhuacheng Engineering Technology Group Co., Ltd.(formerly known as Beijing Huacheng Boyuan Architectural Engineering Design Co., Ltd., etc.) is a comprehensive engineering technology enterprise centered on engineering design and consulting, covering full-process engineering consulting, engineering procurement and construction (EPC) contracting, urban renewal, and research & development and application of green, low-carbon building technologies. The company’s core businesses encompass full-lifecycle technical services for architectural engineering, including pre-project planning and consulting, conceptual and construction drawing design, EPC general contracting management, seismic retrofitting and structural reinforcement of existing buildings, node optimization for prefabricated construction, integrated application of BIM collaborative design platforms, and renovation and enhancement of urban stock space. Leveraging seven invention patents, 32 utility model patents, and 15 software copyrights, the company has established differentiated technological capabilities in intelligent diagnostic systems, low-carbon construction technologies, and digital design collaboration. Its qualification system is comprehensive: it holds Class-A qualifications for architectural engineering design (architectural engineering sector); Class-B specialized qualifications for municipal engineering (road and bridge engineering sectors); Class-A credit qualification for engineering consulting institutions (architectural specialty); Class-II general contracting qualification for architectural engineering construction; and specialized contracting qualification for special engineering (structural reinforcement). Additionally, the company has obtained certification under ISO 9001, ISO 14001, and ISO 45001 management systems, and is recognized as a National High-Tech Enterprise (Certificate No.: GR202311005628). Representative projects include full-process consulting for Phase II of the Beijing Municipal Administrative Office Area in the Beijing Sub-Center; EPC general contracting for resettlement housing in the Rongdong area of Xiong’an New Area; relocation and reconstruction project of Songshan District Traditional Chinese Medicine Hospital in Chifeng City, Inner Mongolia; and urban renewal and renovation of Shishi Garment City in Quanzhou City, Fujian Province. Its service coverage spans multiple provinces across North China, Northeast China, East China, and Southwest China. Targeting government platform companies, urban investment groups, real estate developers, and public utilities institutions, the company offers customized full-process engineering consulting, EPC consortium cooperation, specialized technology R&D support, and integrated urban renewal solutions.

PetroChina Kunlun Gas Co., Ltd. Dalian Gas Branch is a branch established by PetroChina Kunlun Gas Co., Ltd. in Dalian City, Liaoning Province, and is subordinate to China National Petroleum Corporation (CNPC). It is one of the primary urban gas suppliers in Dalian City, responsible for franchised gas supply operations in the urban districts and certain county-level towns, and deeply involved in constructing the regional natural gas security-supply system featuring “multiple gas sources, an integrated pipeline network, and coordinated planning.” The company’s core businesses include piped gas supply (serving residential, commercial, and industrial users), design and construction of gas facilities (holding Grade III General Contracting Qualification for Gas Engineering Construction), sales and installation of gas appliances, gas technical consulting, and comprehensive energy services; all licensed activities are governed by the Gas Business License (License No.: Liao 202302000001G). Leveraging CNPC’s upstream gas resource advantages and synergies with the Dalian LNG Receiving Terminal, the company possesses dual-gas-source security and emergency peak-shaving capabilities. As of the end of 2024, its operations cover key urban districts—including Xigang, Shahekou, Ganjingzi, and the High-Tech Industrial Development Zone—as well as parts of Jinpu New Area and Lvshunkou District, serving over 850,000 piped gas users with an annual gas supply volume of approximately 320 million cubic meters. The company has obtained ISO 9001, ISO 45001, and ISO 14001 certifications; has built a GIS-based digital pipeline network system integrated into Dalian City’s Urban Lifeline Safety Project Supervision Platform; has deployed over 720,000 NB-IoT smart gas meters at scale; achieves a remote meter-reading rate of 98.6%; and responds to abnormal-event alerts within ≤2 hours. Key projects successfully implemented include the relocation and modification of gas pipelines for Dalian Metro Line 5, dedicated gas pipelines for the Dalianwan Subsea Tunnel, and replacement of heating boilers with gas-fired systems in the Lvshun Economic Development Zone. Additionally, the company has launched a demonstration microgrid energy-supply project integrating “gas + photovoltaics + energy storage” in the High-Tech Industrial Development Zone. Areas of collaboration include gas infrastructure construction and renovation, comprehensive energy solutions for industrial and commercial customers, integrated intelligent gas-system solutions, application of corrosion-resistant PE piping technology for saline-alkali soils, and joint implementation of regional clean-energy substitution projects.