Get the name of product from EcoResProduct or InventTable

Does anyone know how to get the name of a product from EcoResProduct on Dynamics ax on a Job?

I found some things like I have to use the EcoResProductTraslation, but I cant find the relation or something to get the name.

You don’t have to bother with implementation details such as EcoResProductTranslation; simply call EcoResProduct.productName().
If you do want to understand the details, open the method look at what it does.