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On April 21, 2025, a batch of liquid-driven compressors independently developed by Yantai Dongde Hydrogen Energy Technology Co., Ltd. (hereinafter referred to as “Dongde Hydrogen Energy”) was shipped to the United States, marking an important breakthrough for China’s core hydrogen energy equipment in the international high-end market. This export not only demonstrates East Germany’s technical capabilities in hydrogen technology, but also strengthens its cooperation in the international hydrogen equipment sector. Liquid-driven compressors are pressure-boosting devices designed specifically for high pressures, medium to low flow rates, and intermittent operation. They are primarily used in all industries that require high-purity, high-pressure, or rare gases, such as hydrogen refueling stations, tubular trailer gas transportation, filling and unloading processes, pressure-boosting and high-pressure gas storage systems, gas cylinder filling, gas mixing systems, chemical, pharmaceutical, and petrochemical plants, gas production for semiconductors, gas delivery, and laboratory research and development. It is reported that the liquid-driven compressors supplied by East Germany to the United States have an exhaust pressure range of 4 MPa to 25 MPa, with a single-unit displacement of 500 cubic meters per hour. American customers have strict requirements regarding the various performance metrics and operational stability of these liquid-driven compressors; after thorough research, they ultimately decided to collaborate with Dongde Hydrogen Energy. Relying on its strong capabilities in independent research and development, East Germany’s hydrogen technology was customized to meet the specific needs of American clients, and it successfully passed the on-site testing and approval by the client representatives. These liquid-driven compressors supplied by East Germany to American customers not only feature high integration, a large compression ratio, and low overall energy consumption, but they also take into account the specific conditions in the United States; special designs have been incorporated regarding safety sealing, operation in low-temperature environments, and maintenance. For example: High sealing performance and high safety levels: Dongde Hydrogen uses seals from internationally renowned brands to ensure leak-free static sealing; the packing features gas leakage recovery, as well as alarm and interlock functions, which help keep the leakage from dynamic seals at the lowest possible level. It is suitable for the safe pressurization of flammable, explosive, and toxic gases, meeting America’s strict environmental and safety standards. High efficiency and energy savings: The cylinder cooling water chamber, specifically designed for hydrogen use in East Germany, enables the DLM04-500 to achieve a compression ratio of 3.26 times while effectively controlling temperature rise, thereby reducing transportation costs and improving storage and transportation efficiency. Adaptation to low-temperature environments: The customer’s operation site is located in the northern United States, where winter temperatures can drop to minus 40°C. The hydrogen-driven liquid displacement compressors from East Germany were designed with careful selection of materials to ensure that the entire unit can operate properly in such low-temperature conditions. Easy maintenance: The East German hydrogen liquid-driven compressor units feature a split-type isolation chamber, which saves a great deal of space during maintenance. It allows the compressor to operate inside a container, resulting in a compact unit design. Generalized integration: The hydrogen liquid-driven compressor units in East Germany feature a highly generalized design, which enables a large number of components to be reused across various applications such as hydrogen refueling stations and chemical synthesis processes. This approach better meets the preferences of the U.S. market for flexible and modular solutions. The export of East German hydrogen liquid-driven compressors to the United States represents not only a breakthrough for a single product but also a milestone in the global expansion of China’s hydrogen equipment technology. Through its proprietary technology, Dongde Hydrogen has broken the long-standing monopoly of European and American companies in the high-end compressor market, offering a \"Chinese solution\" for diversifying the global hydrogen supply chain. In the future, East German hydrogen technology will use this partnership as an opportunity to deepen cooperation with the North American market in areas such as hydrogen storage and transportation sowie the production of green hydrogen, thereby contributing to a transition of the global energy structure toward lower carbon levels and greater intelligence. Founded in Yantai, Shandong in 2018, Dongde Hydrogen Energy is a **-level specialized and innovative small giant enterprise; its business areas include the manufacturing of hydrogen energy equipment and provision of hydrogen energy engineering services. East Germany placed great emphasis on innovative development; it has filed over 800 patents in total and was recognized as one of the top 50 innovative private enterprises in Shandong Province. In terms of products, it now offers a variety of compressor models and series, including diaphragm compressors, liquid-driven compressors, and ion liquid-sealed compressors, all of which are suitable for use under different gas pressures. These compressors find application in green and low-carbon applications across sectors such as petrochemicals, power generation, metallurgy, aerospace, transportation, shipbuilding, and semiconductors.