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With a total investment of 4,879 billion VND, Phuoc An Bridge plays a crucial role in connecting the Cai Mep – Thi Vai international port system with key expressways and major industrial parks in Dong Nai, Ho Chi Minh City, and Ba Ria – Vung Tau, contributing to enhancing the international competitiveness of Vietnam’s seaport system. I. Latest Construction Progress Update of Phuoc An Bridge The progress of Phuoc An Bridge is being actively implemented, with clear milestones across various packages. 1. Progress of Main Packages Package No. 38: Production value reached over 574 billion VND, equivalent to 59% of the contract value. Package No. 39 (Main cable-stayed bridge – constructed by Trungnam E&C): Trungnam E&C: Achieved cumulative production value of 547 billion VND, equivalent to 54.83% of its assigned contract value. Trung Chinh: Achieved cumulative production value of 422 billion VND, equivalent to 72.58% of its assigned contract value. Total joint venture production: Reached 969.484 billion VND, equivalent to 61.37% of the total contract value. Packages No. 40 and 41: Facing many difficulties due to obstacles in site clearance (GPMB) and a shortage of backfill materials. 2. Construction Milestones for Main Bridge Components (August 2025) Trungnam E&C is accelerating rapidly, as shown by important detailed progress: Pier T37: Completed construction of pier shaft segment D6 and is continuing with segment D7. Pier T38: Completed pouring block K8. Notably, the first cable-staying tensioning is scheduled to be implemented on August 30, 2025, a groundbreaking technical event for the project. Pier T39: Completed pouring block K6 and is continuing with block K7. Pier T40: Completed construction of pier shaft segment D6 and is continuing with segment D7. 3. Outstanding Performance of Trungnam E&C In August 2025, Trungnam E&C recorded impressive construction performance: achieving an actual production value of 16.85 billion VND,

On the morning of August 19, 2025, the Rach Mieu 2 Bridge Inauguration Ceremony successfully took place. This vital project, spanning the Tien River and connecting Dong Thap and Vinh Long provinces, marks not only a historical milestone for the transportation sector but also symbolizes the resilience, intellect, and internal strength of Vietnamese construction enterprises. I. A Historic Inauguration Ceremony and Timeless Imprint It was a meaningful day as the entire country celebrated the 80th anniversary of the August Revolution and prepared to welcome National Day on September 2nd (September 2, 1945 – September 2, 2025). The event was attended by high-ranking leaders such as Standing Deputy Prime Minister Nguyen Hoa Binh, former National Assembly Chairwoman Nguyen Thi Kim Ngan, along with leaders from the Ministry of Construction and relevant localities. The completion and inauguration of Rach Mieu 2 Bridge, approximately 5 months ahead of the initial schedule, is a proud achievement. This is a clear testament to the self-reliance of Vietnam’s construction industry, as domestic units have mastered the entire process of design, construction, and equipment manufacturing for a large-scale cable-stayed bridge project. Trungnam E&C is committed to delivering the highest value to customers, shareholders, and employees, with projects meeting high quality standards, ensuring progress and absolute safety, contributing to “Creating Sustainable Value” for Vietnam.   II. Rach Mieu 2 Bridge: A New Lifeline for Dong Thap and Vinh Long Rach Mieu 2 Bridge and its approach roads have a total length of 17.6 km, with a total investment of 6,810 billion VND from the state budget. The main bridge section is 1.97 km long, designed as a cable-stayed bridge with 112 cable bundles and two main towers reaching 116.5 m high. The main span is 270m long, the bridge deck is 21.5 m wide, with 4 mixed-use lanes and a

“The progress of the Chau Doc – Can Tho – Soc Trang Expressway is accelerating, with Trungnam E&C achieving a breakthrough 39% completion, finishing the girder installation of Xang Lai Hieu Bridge, overcoming the ‘sand shortage’ to bring the project to fruition on schedule.” I. Project Overview The Chau Doc – Can Tho – Soc Trang Expressway (Phase 1) project is a strategic expressway connecting the Mekong Delta. Upon completion, it will reduce transportation time, boost logistics, and promote regional economic development. In the Hau Giang section, Trungnam E&C is undertaking many key construction items — the overall package progress in Hau Giang reached 39% as of August 2025. Total length: 188.2 km, passing through 4 provinces and cities: An Giang, Can Tho, Hau Giang, and Soc Trang. Scale: 4 lanes, design speed 100 km/h. Total investment: 44,700 billion VND. Commencement date: November 2023. Completion target: Expected to complete the entire route in 2026 and put into synchronous operation in 2027. The project is divided into 4 independent sub-projects, each managed by a local authority, ensuring coordination and specialization in implementation. II. Rapid Progress of Bridge Construction Items. Trungnam E&C is the leading contractor in the joint venture constructing Package No. 02 (section from Km113+200 – Km131+082) and Package No. 09 (section from Km131+300 – Km144+500) belonging to Sub-projects 3 and 4. With the spirit of “overcoming sun, winning rain” of the Trungnam E&C team, the work continues to blaze on the construction site. Main construction items of Trungnam E&C: Road section: Excavation of unsuitable soil. Sand embankment for service roads/temporary roads/main route. Weak ground treatment: CDM (Cement Deep Mixing)/PVD (prefabricated vertical drains) combined with preloading. Box culvert construction. Bridge section: Xang Nang Mau Bridge (XNM): Currently constructing cross beams, deck slabs. Hoa My Bridge: Girder installation completed, currently constructing cross beams, deck slabs and bridge railings. Xang Lai Hieu Bridge: Girder installation completed, currently constructing cross

The Xang Lai Hieu Bridge, a key component of the Chau Doc – Can Tho – Soc Trang Expressway, is 500m long with a total investment of 160 billion VND. Girder installation is almost complete. I. Xang Lai Hieu Bridge: A “Breakthrough” Key Component on the Expressway 1. Location of Xang Lai Hieu Bridge The Xang Lai Hieu Bridge is being built at kilometer marker Km122+049.80 on the Chau Doc – Can Tho – Soc Trang Expressway. The bridge is 500m long with a total investment of 160 billion VND.   The timely completion of the Xang Lai Hieu Bridge will significantly contribute to effectively connecting key areas of Hau Giang province with neighboring provinces, facilitating trade, goods transportation, and promoting local socio-economic development. 2. Xang Lai Hieu Bridge Girder Installation (August 2025) Construction progress in August 2025 has shown Trungnam E&C’s high level of focus to meet the set objectives. Girder Installation: The installation of Xang Lai Hieu Bridge girders is being urgently carried out, with 63 out of 84 girders installed (each weighing 80 tons), completing 9 out of a total of 12 bridge spans, further affirming the breakthrough effort.   Crossbeam and Deck Slab Construction: In parallel with girder installation, Trungnam E&C is actively implementing the construction of crossbeams and deck slabs. These are important items to complete the superstructure, creating the road surface for vehicles.   T5, T6 Pier Cap Construction: The construction of T5 and T6 pier caps has been actively implemented, creating a solid foundation for girder installation. Other Items: In addition, roadbed construction, soft soil treatment using CDM piles and wick drains, and culvert construction are also being carried out in the Km120+200-Km122+580 area.   Quality Control: Trungnam E&C always prioritizes strict inspection and testing such as frequency testing of galvanized mesh thickness,