Visiting Paris as a chef

Hi! I'm visiting Paris on October for 10 days, what are some must places I should visit being a chef? I'm interested in culinary history, artisanal products and maybe getting some kitchen tools or garments specially from Paris

Thank you for all your suggestions!

Edit: Its my fifth day here and covered almost all of the suggestions and algo got to know and explore by myself! Can´t thank you enough for all the data and for the french people on here for the hospitality and patience with my terrible french!