Products have changed in AX 2012. They are a global definition, that is company-agnostic. EcoResProduct, EcoResProductTranslation should get you down the right path for creating those global definitions of a product ( number, name, search name, procurement category [EcoResProductCategory] , etc. )
Then, after that is created, you can release that as a EcoResDistinctProductVariant to a legal entity, which will place the data in the InventTable.
If you are creating products with configurations such as Config, Color, Size, then you will need to investigate Product Masters and product variants, and the releasing thereof.
We utilized the AIF for this task, over 10,000+ products imported in a few hours.