About HEF GroupHEF Group is an employee-owned global leader in material science surface treatment and coating.HEF develops and delivers advanced tribology solutions from R&D through industrial production including Tribology Testing Nitriding PVD/DLC Coatings and Friction Components fo

About HEF GroupHEF Group is an employee-owned global leader in material science surface treatment and coating.HEF develops and delivers advanced tribology solutions from R&D through industrial production including Tribology Testing Nitriding PVD/DLC Coatings and Friction Components fo

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