Useful if you need more than one taxes or have multicompanies and you are using the same products for both companies
This module add a menu on Sale/Configuration/Product/Default Taxes with a many2many where you define your needed taxes
This module set False as default company in your users and products to be used better with multicompany
Menu Creation
Tree (Appears created the first and unique row to introduce your taxes) (Forbiden create and delete, change this default behavior make uncontroled errors)
Product Form