odoo v15EE How to share product buy not restricted suppliers

The product that can be bought or sold is shared among several companies in the base and is only seen by the companies that are established in the product (company multi tag and record rule), however, the product has an established supplier that is exclusive to the importer and that supplier does not It should be seen by the unauthorized base company.

The product is shared but the supplier from whom they buy is not. This generates a multi-company problem. 

Some idea to solve?