The HEF Group is a world leader in the production of services, technologies and components in the area of surface engineering. HEF engineers carry out advanced R&D on materials, coating processes, surface texturing, tribology as well as production equipment (PVD-PECVD Machines). HEF key expertise’s are in the areas of (1) tribology and surface functionalization ; (2) high performing thin films coatings such as DLC and other mechanical and tribological layers ; (3) Thermochemical treatments (nitriding) and (4) tribological components (bearings).