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Our Services

Design and Construction

Design and Construction Contractor with vast experience both conventional construction work and turn-key projects.

Quality Services

Services can be classified according to architecture and civil construction

After-Sales Service

Service & Maintenance for after-sales with the high-quality team services

Recent Works

Latest Events & Activities


Chinese New Year 2015

Happy Chinese New Year 2015 [Show slideshow]

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CSR – School Maintenance for Hill Tribe at Tak Province

OS Group has returned a good thing to the community by our management’s policy which in this case, we have been repaired and maintenance a school of hill tribe at “Thai Hill Tribe Center (Maefahluang) at Baan Ta Do Kui, Amphur Thasongyang, Tak Province during the 4th-7th December 2014. [Show slideshow] 12►

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Fire and Rescue Training Course

SADA Group has organized one of Training Course at SADA Group Office “Fire and Rescue – Professional Level” [Show slideshow]

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Annual Ceremony

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Outing Sada Activity Seminar 2014

Sada Group has organized an event annually 2014 for outing activity which held on June 27, 2014 at Rayong Province. [Show slideshow] 12►

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OS Group - Engineers Work Engineering

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