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.

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.