Banggood dropshipping program its free and open but there is a kind of vetting process after you apply for an API key.
To start, you must register yourself using the "Banggood dropshipping program registration form"
The information required are pretty the same you should provide to every dropshipping supplier on the market.
Banggood divides the dropshipping account panel from the API panel, accessible with the same credentials but from a different url https://api.banggood.com
Enter the Banggood API portal and you will see the API Key set showed on the home page.
Take note of your API key, it will be necessary on ApiDrop to activate Banggood as supplier.