NOV ELMAR is the global leader in the design and manufacturing of wireline products for slickline and electric line applications and is a subsidiary company of National Oilwell Int. with its main office in Houston, Texas. National Oilwell Varco is a global leading company within Sales, Design, Fabrication and Commissioning of systems and products for the Oil and Gas industry. NOV has 60.000 employees worldwide in more than 600 locations spread over 60 countries. Elmar is located in Groot-Ammers and has approx. 170 employees.