Hi Jonas,
Thanks for using our plugin and reaching out to us.
On the field mapping section of our plugin you can add these fields / mappings. You do have to map them to your WooCommerce attributes holding those values.
You can do so by hitting the orange “+ add field mapping” button on the field mapping section. So for product type this is the field mapping you need to create:
https://www.dropbox.com/s/tyyonz505qrh2jo/FB-ProdType.png?dl=0
For the MPN it is somewhat different. In the example below we added the field mapping and mapped it to our woosea MPN attribute that holds the MPN values. For you this will need to be your own attribute that holds your MPN values:
https://www.dropbox.com/s/nl2qi7hnsbfy51c/FB-MPN.png?dl=0
Hope this answers your question?