In this season of renewal, we are honored to have received a letter of appreciation from Jiujiang Petrochemical Design Engineering Co., Ltd. This recognition, like warm winter sunlight, is especially precious and deeply encouraging to us.

To: Beijing HANQI Environmental Technology Co., Ltd.

Regarding the engineering design work for the "System Supporting Project of the 1.5 Million Tons/Year Aromatics and Oil Refining Upgrading Project at Jiujiang Branch,"important phased achievements have been made. During the cooperation, the design team led by Wang Hu demonstrated exceptional professionalism, a strong sense of responsibility, and outstanding collaborative spirit, leaving a deep impression on us. We hereby extend our sincere gratitude and high praise to your company and all members of the design team.

Since the project's commencement, your team has consistently adhered to high standards and strict requirements, advancing all design tasks in a scientific and rigorous manner. The project leader communicated proactively and coordinated effectively, while team members demonstrated solid expertise and meticulous attention to detail. Many of their valuable technical suggestions were adopted, laying a solid foundation for the smooth implementation of the project.

Particularly commendable is your team's efficient response and close collaboration. During design reviews, they quickly addressed our adjustment requests and promptly completed drawing revisions and updates. They also proactively identified and highlighted potential technical challenges and risks during construction, playing a key role in ensuring the overall progress of the project.

Your team's outstanding performance fully reflects the strong technical capabilities and first-class service standards of Beijing HANQI Environmental Technology Co., Ltd. We are highly satisfied with this collaboration and sincerely look forward to continuing our partnership in the future, working together to create more high-quality projects.

Once again, we extend our heartfelt thanks to your company and the project design team.

Appreciating Unit: Jiujiang Petrochemical Design Engineering Co., Ltd.
Date: January 20, 2026

This letter of appreciation not only recognizes the professional dedication of the project team but also reflects the trust and strong support from our clients. We sincerely appreciate this collaborative partnership.

The New Year symbolizes a new beginning and carries new expectations. The encouragement from this recognition will fuel our progress. In the future, we will continue to deliver each project with dedication, repaying our clients' trust with professionalism and responsibility.

As the New Year approaches, we wish our clients and partners a prosperous and successful year ahead.