Starting Amazon Business with Plush Dolls from China, need advice…

More specifically I wanted to sell Pokémon Plush Dolls from Alibaba after I vet the Manufacturer properly. The vendors have documentation confirming they received permission from The Pokémon Company to Manufacturer and sell these items and have told me that I won’t have an issue reselling them. What else do I need to ask the manufacturers for? Are there any specific certifications or Barcodes, tags, etc I need to sell these items on Amazon?