@Jordmor11 Sorry, i don't really understand French... i used google translator to understand your question :)
Yes everything will be in the Box/Package as the official version does.
1x OnePlus 6T
1x Screen Protector (pre-applied)
1x Case
1x OnePlus Fast Charge Type-C Cable
1x OnePlus Fast Charge Power Adapter
1x éjecteur de carte SIM
1x Welcome Letter
1x Quick Start Guide / Poster
1x informations de sécurité
1x Type-C to 3.5 mm Headphone Jack Adapter