On December 28, 2025, the completion ceremony for the 1 million ton/year methanol-to-olefins (MTO) plant of Guangxi Huayi Energy Chemical Co., Ltd. (“Guangxi Huayi Energy Chemical”) was held as scheduled. Chairman and Party Secretary of Huayi Energy Chemical Liang Quanrong, Vice President Xing Yi, Deputy Project Manager Lu Wenjun, Director of Beijing Huaxia Supervision Bureau Liu Guoyu, CEO Zhou Hongliang and Senior Vice President Qi Guosheng of Wison Engineering, as well as leaders of relevant construction units attended the completion ceremony. The world's first 1 million ton/year MTO plant, which was undertaken by Wison Engineering under an EPC contract, was officially handed over to the client with high standards and high quality, marking that China's large-scale chemical equipment manufacturing and process technology application have entered the global leading ranks.

The MTO unit, as the leading unit of Guangxi Huayi Energy Chemical's Phase III project, adopted Honeywell UOP reaction technology and Wison Engineering's olefin separation integrated technology route. This was the 12th successful application of these technologies. This unit not only bears the important mission of providing raw materials for the downstream units in Phase III, but also is a key link in the overall planning of the Huayi base and the realization of new quality productive capacity. Relying on the advanced methanol-to-olefin process technology, it will surely help Guangxi Huayi Energy Chemical achieve the goals of enterprise leapfrog development and the transformation and upgrading of the petrochemical industry.

The project officially signed the EPC general contract on January 12, 2024. The on-site construction was fully launched on March 4. The installation project was progressing smoothly on October 12. The important milestone of large-scale lifting was achieved on December 28. From August 2025 when the substation successfully received power, to October 30 when the reverse and reprocessing system was ready for baking, to the efficient cancellation of 4780 "three checks and four determinations" items, and finally to the complete elimination of all 640 issues identified by the Huayi Group's cross-project inspection, the project was delivered to a high standard today. It took 720 consecutive days of hard work. Every milestone is engraved with the perseverance and dedication of all construction workers, and every achievement is the result of everyone's hard work and commitment.

Throughout the entire project construction process, we have always remained committed to our original intentions and taken on our responsibilities. In terms of design, we have been meticulous in our efforts, jointly conducting multiple rounds of in-depth technical reviews with the project owner, and completing the review and optimization of 13 core technical solutions. This not only ensured the compliance of the project but also enhanced the future operational efficiency. In terms of procurement, we strictly controlled the process, strictly adhering to the supplier admission and equipment supervision systems, and jointly completed the factory acceptance and on-site re-inspection of over 1828 sets of equipment, ensuring zero defects in the quality of the core equipment. In terms of construction, we strictly adhered to safety and quality control, achieving nearly 6 million safe working hours and an outstanding result of a 98.45% pass rate for non-destructive testing. Through hard work and dedication, we have demonstrated the corporate spirit and responsibility of "integrity, innovation, entrepreneurship, responsibility, respect, and win-win" and fulfilled our responsibilities.

The interim handover is not the end; it is a new starting point. Moving forward, we will fully cooperate with the client's unit, focusing on key tasks such as final item rectification, document archiving, and production connection. We will provide comprehensive service support throughout the process to ensure the successful first start-up of the equipment, the attainment of performance assessment standards, and ultimately achieve "safe, stable, long-term, full, and excellent" operation. With our actions, we will repay the trust and support of all parties.

From a contract to the completion of the facility, from technological breakthroughs to industrial empowerment, the delivery of the Guangxi Huayi MTO project is not only a milestone for Wison Engineering, but also a vivid illustration of China's petrochemical industry's transformation towards high-end, green, and intelligent development.