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On December 26, 2022, the first phase of the Donghua Energy Alkane Resources Comprehensive Utilization Project in Maoming, Guangdong was fully transferred to the test run stage. After the instruments were powered on, watered, and ventilated, instruments, valves, etc. were debugged. The processes of each device were gradually opened up, and the process will gradually transition from stand-alone operation to linked test run. The Donghua Energy Alkane Resources Comprehensive Utilization Project started construction in March 2020, with a total investment of 40 billion yuan. It is the largest private industrial project since Maoming was founded as a city. It will help Maoming build a 100-billion-level industrial cluster and provide momentum for the development of Guangdong's coastal economic belt. The project will be implemented in three phases with a total investment of 40 billion yuan, focusing on the development of the propane-propylene-polypropylene industrial chain. The first phase of the project will invest approximately 16.6 billion yuan to build two sets of 1 million tons/year propane dehydrogenation units and four sets of 500,000 tons/year polypropylene units. After it is completed and put into operation, it will be able to produce 80,000 tons of hydrogen per year. Part of it will be used to upgrade marine fuel oil, and the other part will be used to develop the hydrogen energy industry in Maoming. Maoming will be built into a well-known domestic hydrogen energy industry highland covering the three provinces of Guangdong, Qiong, and Guangxi, and Maoming will realize the strategic transformation from an "oil city" to a "hydrogen city." At the Donghua Energy Project construction site, the tower crane of the propane dehydrogenation (PDH) unit is towering, the pipe gallery is winding, and the roar of various machines can be heard. Test runs are being carried out simultaneously in multiple areas. The person in charge of Donghua Energy (Maoming) Co., Ltd. said that commissioning is to solve problems and gradually adapt the equipment and instruments to real production conditions. The commissioning marks the project's transition from equipment installation to commissioning, and then a solid step towards completion and production. It is understood that the Donghua Energy Project only took 19 months from the start of construction to completion and commissioning, which is far shorter than the average 24-month construction period of similar devices, creating the "Maoming Speed" of manufacturing transformation. Maoming, known as the "Southern Oil City", has previously realized two industrial iterations from oil shale processing to imported crude oil processing to integrated refining and chemical production. When the global chemical industry shows a trend of transformation in the gas chemical industry and green chemical industry, Maoming is also pursuing its own third industrial iteration. At present, Maoming has planned to build a green chemical and hydrogen energy industrial park, with the Donghua Energy Project as the leader, to develop and extend the industrial chain, focusing on carbon fiber, 3D printing, hydrogen energy industry and other development directions, accelerating the cultivation of Maoming's 100-billion-level industrial cluster.