
About Us
Founded by Mr. Prasert and Mrs.Pohn Thepsutin, Therdthai and Co Co., Ltd., then Sukhothai Engineering Part., Ltd., officially commenced its business on May 16, 1980. Our original mission was all civil works construction, mostly building highways in Sukhothai and the vicinity. We have our own compaction machine and equipment.
Vision
Be a leader in the construction industry, providing high-quality services that are up to high standards. Be responsible to the society, and invest in industries which shows sustainability and potential.
Mission
Provide high-quality works for our customers, generating reasonable income and profit which contributes to sustainable and continuous growth.
Develop an effective management system together with human development, as both factors are vital to the achievement of our vision.
Conduct our business with responsibility towards the society, the environment, and communities involved in our projects.


Construction services
Throughout the years, our company has completed various civil engineering and infrastructure projects with a determination to construct high-quality projects that are accepted by government organizations…

Machine renting services
Our company has developed our machine center in Sukhothai to be a center for defensive, during-project, and post-project machine maintenance, as we understand that maximizing efficiency in machine management is vital…

GPS business
With over 30 years of reputation as a trustworthy business, together with strong relationships with business partners, our company expanded our business into GPS market in 2019. Our company curates brands that are known for…

- Construction project on Highway No. 3056, Ban Wa Subdistrict – Phachi District, Ayutthaya Province, Section 1Therdthai2025-09-02T11:55:52+07:00
- Construction of Concrete Road, “Nor2” and “Nor3” Road – Mukdahan Overall Town PlanningTherdthai2025-09-02T11:56:44+07:00
- Project: Highway No.36 : Kratinglai-Rayong route (Including Crossing Rayong Section 3, Thap Ma Intersection and Ban Don Intersection), Nong Bon-Ban Laeng Intersection, Section 1Therdthai2025-09-08T14:51:05+07:00Project: Highway No.36 : Kratinglai-Rayong route (Including Crossing Rayong Section 3, Thap Ma Intersection and Ban Don Intersection), Nong Bon-Ban Laeng Intersection, Section 1
Project: Highway No.36 : Kratinglai-Rayong route (Including Crossing Rayong Section 3, Thap Ma Intersection and Ban Don Intersection), Nong Bon-Ban Laeng Intersection, Section 1
- Project: Highway No.101 : Kamphaeng Phet–Sukhothai, Lan Krabue – Khiri Mat IntersectionTherdthai2025-09-02T11:58:52+07:00
- Construction of Asphaltic Highway, Highway No.12 Tak – Amphur Mae Sort Route, Section 3 Part 1moreadmin2020-11-17T12:37:43+07:00
- Construction of Concrete Road, “Nor1”, “Nor2”, “Nor4” and “Nor5” Road – Phetchabun Overall Town Planningmoreadmin2020-11-17T12:37:58+07:00
Core Values
“Working with efficiency, holding a high standard that is accepted by organizations involved, promoting honesty and proactive mindset by utilizing the capabilities of our teams to achieve the best result.”