ABOUT US Doha Industries and Engineering Services (DI&ES) - formerly known as Doha Hydraulic Services - is an engineering and hydraulic services company headquartered in Qatar, involved in maintenance, repair and overhauling (MRO) of heavy equipment in the construction, industrial, transportation, marine, oil and gas sectors. With a technical team boasting of over 30 years’ experience in engineering and hydraulics MRO industry, DI&ES is a professionally managed ISO 9001:2015 certified company with a state of the art workshop to carry out all services. DI&ES is involved in providing complete engineering, technical consulting, metal fabrication and fluid power solutions employing the latest industry best practices at superior quality and competitive prices.