S.Zia-ul-Haq & Sons (Zia) is an ISO-9001 certified group actively involved in diversified services; the company was establish 1918 and best known for its professionalism in the following fields.

Company maintains sound reputation while serving major customers in Oil & Gas, Power & Energy, Process Industries, Airport, Harbor and Road Construction etc. Zia is adding more services to its group and continuously enhancing capabilities through expansion, staff training and adoption of international standards.