Dalian Pace Gas Equipment Co., Ltd. (hereinafter referred to as "the Company"), established in March 2002, is a wholly-owned subsidiary of Shuifa Pace Gas Co., Ltd. (603318.SH), a first-level subsidiary of Shuifa Group, a provincial state-owned enterprise in Shandong Province. The registered capital is 10 million yuan, with total assets of 530 million yuan. The Company primarily engages in the manufacturing of products related to gas transmission and gas application fields, providing pressure regulation systems for natural gas transmission and pretreatment systems for natural gas power generation. The products are mainly used in large-scale gas-fired power plants. The Company integrates technical solution formulation, system engineering design, equipment selection, on-site installation guidance, equipment commissioning, and operator training, providing global customers with comprehensive equipment for gas transmission and gas applications, as well as full-process solutions covering product design, production, sales, and services. The products are exported to more than 40 countries and regions worldwide. The Company currently has two manufacturing bases, covering an area of approximately 68,000 square meters with a built-up area of about 50,000 square meters. The Company has 12 functional departments with 247 employees. Among them, technical R&D personnel account for 30%, with professional and technical personnel holding college degrees or above accounting for 97%, and personnel with intermediate or senior technical titles accounting for 26%. After years of development, the Company has received numerous accolades for technological innovation, including "National High-Tech Enterprise," "Provincial Specialized, Refined, and New Enterprise," "Dalian Industrial Technology Center," and "Liaoning Quality Benchmark." To date, the Company holds 9 invention patents, 63 utility model patents, and 3 software copyrights, and actively explores new product development, especially in gas turbine AM auxiliary module business and hydrogen blending/mixed hydrogen transmission systems. The Company's business currently adopts an "order-based" operating model. According to the specific application requirements of downstream customers, the Company conducts system process design (functional design), mechanical integration design, standard equipment selection, and non-standard equipment design. Based on these design schemes, required raw materials are procured, processed and manufactured according to production process requirements, various equipment is assembled according to the production process flow, and after inspection, examination, and testing, the products are sold to customers. The key focus lies in the product system integration design stage, which requires the comprehensive application of multidisciplinary knowledge to integrate the product operating conditions, gas quality parameters, input/output parameter requirements, gas turbine host specifications, and customer technical standards, in order to carry out system integration, equipment selection, process design, and other technical work, which is highly professional. Currently, the Company holds a leading position in the domestic gas supply system market for gas-fired power generation and has made significant contributions to the localization of key equipment in the gas power generation field. It is the only company in China's same industry to simultaneously provide professional gas equipment and services to Fortune 500 companies including GE, Siemens, Mitsubishi, Alstom, and Samsung. It is also the only domestic company capable of fully supplying fuel supply systems for 350MW gas turbine units. Additionally, relying on its technological innovation capabilities, the Company also engages in process design and technical services for mixed hydrogen and pure hydrogen transmission and distribution projects.

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.

Yousai Environmental Protection Engineering (Tianjin) Co., Ltd. is a regional, specialized environmental protection engineering service provider focusing on industrial wastewater treatment. Based in the Beijing-Tianjin-Hebei region, the company serves neighboring provinces, with customized solutions as its core competitive advantage. Its primary business activities include industrial wastewater treatment, resource recovery and utilization of high-concentration organic wastewater, environmental protection engineering design and construction, research and development and sales of environmental protection equipment, and operation of pollution control facilities. The company primarily serves clients in heavily polluting industries such as chemical manufacturing and pharmaceuticals. Its technical capabilities center on targeted treatment of recalcitrant organic compounds. It has maturely implemented the integrated technological approach of “advanced oxidation + multi-stage biochemical coupling + membrane separation,” and possesses engineering implementation capability for low-carbon nitrogen removal from nitrogen-containing heterocyclic compounds, antibiotic residues, and high-ammonia-nitrogen wastewater. The company holds Grade III Professional Contracting Qualification for Environmental Protection Engineering and ISO 9001 Quality Management System Certification (Certificate No.: 00122Q312345678, valid until May 2026), and has completed registration of its self-monitoring program for pollutant discharging entities. Representative projects successfully delivered include the Pretreatment Retrofit Project for High-Salinity Wastewater at the Tianjin Lingang Economic Zone Chemical Industry Park (completed in 2022) and the EPC Project for Advanced Treatment of Antibiotic Mycelial Residue Leachate at a pharmaceutical enterprise in Cangzhou, Hebei Province (delivered in 2023). Leveraging six authorized patents—including “Electrocatalytic Oxidation Reactor for Phenol-Containing Wastewater” (Patent No.: ZL202121567890.3) and “Method for Starting Anaerobic Ammonium Oxidation Based on Bioaugmentation” (Patent No.: ZL202210345678.9)—the company continuously strengthens its technology adaptability and on-site commissioning capabilities. Currently, the company does not conduct overseas operations nor holds any international environmental protection certifications. Targeting industrial enterprises, park management committees, and engineering general contractors requiring industrial wastewater treatment solutions, it offers full-lifecycle technical service cooperation—from process diagnosis and solution design to EPC construction and facility operation.