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Long, Tan & D'Onofrio is a trusted engineering firm based in Wilmington, DE, offering professional and reliable engineering services tailored to meet the needs of diverse projects. With a commitment to quality and innovation, they serve the Wilmington community and surrounding areas, ensuring each project is executed with precision and expertise.
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We provide a wide range of engineering services, including civil, structural, and environmental engineering tailored to meet the needs of local projects.
Choosing a local firm means you benefit from our understanding of the local regulations, climate, and community needs.
We maintain high-quality standards by employing experienced engineers and utilizing the latest technology and practices.
Our pricing is competitive and transparent, and we provide detailed estimates tailored to each project's specific requirements.