Carester (Caremag) Carester specializes in hydrometallurgical and solvent extraction technologies for rare-earth metal recovery, and is based in Lyon, France. Carester has signed a binding offtake agreement with Stellantis Auto SAS. The long-term agreement provides the supply of more than 3,400 tonnes of neodymium, praseodymium, dysprosium, and terbium oxides, 36% of which are derived from recycling, over a ten-year period. Carester (Caremag)