Challamel Grégory is currently the Directeur général at ADTP, a position held since 2025. They previously served as the Technical vice general manager at Bosch automotive steering Nanjing from 2014 to 2017, managing production, industrial engineering, logistics, quality, and maintenance for a new steering plant. Their extensive experience includes roles such as Project Director at Bosch automotive steering Marignier in 2017, Plant Manager at Bosch Marignier from 2018 to 2025, and various positions at ZF systèmes de directions France focusing on lean management and production. Grégory earned a degree in mechanical engineering and production methods from Ecole catholique d'Arts et Métiers de Lyon between 2000 and 2003.
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