EXHIBIT 99.3

CDT Environmental Technology Reports 2025 Unaudited Interim Financial Results and Provides Business Updates

Revenue of $7.3 million and loss per share of $0.11 impacted by reduced project activity due to a slowdown in the PRC economy

SHENZHEN, China, December 23, 2025 (GLOBE NEWSWIRE) -- CDT Environmental Technology Investment Holdings Limited (Nasdaq: CDTG) (“CDT”, the “Company”, or “we”), a leading provider of waste treatment systems and services throughout China, today reports its unaudited interim financial results for the six months ended June 30, 2025, and provides updates on key business developments.

All amounts are expressed in US dollars unless otherwise stated.

2025 Unaudited Interim Financial Results and Business Update

(i) reduced external demand for the Company’s traditional environmental engineering services amid the PRC economic slowdown; and

(ii) the Company’s deliberate strategic shift to scale back on legacy projects with excessively long receivable cycles, reallocating resources toward its new green hydrogen and organic waste-to-energy initiatives.

(iii) decrease in the number and timing of project revenue recognitions, as six project contracts contributed revenue during the comparable prior-year period, whereas only four projects contributed revenue during the current period, with certain remaining projects not yet meeting revenue recognition criteria. Among the four projects recognized in the current period, except for the Guankou project phase 6, the other three projects had reached over 95% completion and were in their final stages, resulting in limited incremental revenue recognized during the period.

(i) lower revenue from reduced project activity amid weakened market demand; and

(ii) the recognition of $2.1 million in non-cash stock-based compensation expense related to the Company’s 2025 Equity Incentive Plan, under which shares were granted to key employees and advisors and accounted for as compensation in accordance with ASC 718.

Business Update 

As of June 30, 2025, the Company had three projects in backlog:

Both the Sichuan Anya and Xinjiang Projects were signed and commenced in August 2024. Phase VI of the Guankou Project is a supplemental agreement to the existing Guankou Project, which was signed and commenced in April 2024, and represents an incremental scope under the original contract—it does not constitute a new, standalone project. The combined tentative contract value of these three projects is approximately $19.6 million.

Green Hydrogen Initiative

Li Yunwu, CEO of CDT, said “Our first half 2025 performance was challenging as we continued to experience economic headwinds in the PRC market that have impacted new infrastructure projects and delayed some that are in the pipeline. Despite these challenges and the resulting volume pressure, we achieved 250 basis points of gross profit margin expansion compared to the same period last year through the restructuring initiatives we undertook in 2024 and other cost-saving measures. As economic conditions in China stabilize, we believe we remain well positioned to capitalize on opportunities associated with favorable, long-term secular trends including water conservation, safety and regulation.

Mr. Li added, “Even as we face an unpredictable operating environment in the near-term with soft end market demand, we are taking proactive and strategically targeted steps to leverage our core operational capabilities through technological innovation and partnerships. Our recently announced strategic initiative to support the growth of the hydrogen economy is an integral part of our planned transformation and broader strategy to participate in new energy by commercializing operations of organic solid waste-to-hydrogen production facilities in China. We believe our collaborations with leading scientific organizations and government regulatory bodies have created a foundation for the Company to accelerate the transition to a hydrogen economy. We expect to report several milestones related to our green hydrogen initiative including advancements in the Company’s hydrogen enabling technologies, as well as progress in executing several customers’ hydrogen projects and new partnerships in the sector.

We believe the actions we have taken to streamline our operations, along with our planned long-term investments in our new energy growth initiatives, are expected to deliver value to customers and improve returns for shareholders.”

About CDT Environmental Technology Investment Holdings Limited

CDT, headquartered in Shenzhen, China, is a leading national player in China’s waste treatment sector that designs, develops, manufactures, sells, installs, operates and maintains sewage treatment systems and provides sewage treatment services in China, and is dedicated to promoting sustainable development through innovative solutions. Founded by pioneers in waste treatment, CDT aims to advance next-generation technologies that directly address environmental challenges and promote sustainable solutions. CDT is a recognized brand in China and is committed to innovation and customer satisfaction.

CDT’s mission is to help its customers achieve their critical infrastructure objectives while enabling positive changes in technological environmental protection. It collaborates with industry leaders, environmental experts, and stakeholders to develop and implement advanced waste treatment solutions. Recently listed on the Nasdaq Capital Market, CDT is a prominent player in the waste treatment market, capable of providing comprehensive solutions to diverse customer needs, and has completed more than 150 plants across China.

For more information, please visit CDT’s website at https://www.cdthb.cn.

Forward Looking Statements

This press release contains forward-looking statements that are based on the beliefs and assumptions of the management of CDT and on information currently available to such management. These forward-looking statements are subject to numerous risks and uncertainties, many of which are beyond CDT’s control. When the Company uses words such as “may,” “should,” “will,” “future,” “expect,” “anticipate,” “project,” “estimate,” “believe,” and “intend,” or similar expressions that do not relate solely to historical matters, it is intended to identify forward-looking statements. All statements, other than statements of historical fact, contained in this press release, including statements regarding future events, future financial performance, business strategy and plans, and objectives of CDT for future operations, are forward-looking statements. Although CDT does not make forward-looking statements unless it believes it has a reasonable basis for doing so, CDT cannot guarantee their accuracy. These statements are only predictions and involve known and unknown risks, uncertainties and other factors, which may cause the actual results, levels of activity, performance or achievements of CDT and its markets to be materially different from any future results, levels of activity, performance or achievements expressed or implied by these forward-looking statements. Further information regarding these and other risks, uncertainties, or factors is included in the Company’s filings with the U.S. Securities and Exchange Commission. For these reasons, among others, investors should not place undue reliance on any forward-looking statement. CDT undertakes no obligation to publicly update or revise any forward-looking statements to reflect events or circumstances that arise after the date hereof, whether as a result of new information, future events or otherwise, except as may be required by applicable law.

For more information, please contact:

Investor and Media Contact
United States

PCG Advisory
Kevin McGrath
Tel: +1-646-418-7002
Email: kevin@pcgadvisory.com