Onyx deals with the design, construction, and maintenance of the physical and naturally built environment, including works like roads, bridges, canals, dams, and buildings. Our team has big experience in WASH engineering in Yemen and one of our team was in charge for construction of Sana’a water tanks. Also, Almaghrabah Road, Hajjah, this 2 km Asphalt mountain road was constructed by Griffin company and one of ONYX team was the project manager who was responsible of supervision, BOQ, invoices, subcontractor contracts, quantities.
