Hi Oleg,
Our long term solution to your problem is that we are planning to add some generic varchar fields to the main tables (customer, product etc) that can be used for personalizations.
Until we have that, a solution for you could be to to add manufacturers_model and products_ean to the product model attribute as comma separated variables (you will have to increase the size of the products_model varchar in the database). Then you will have to modify the JSPs to unpack the data for visualization purposes.
-Paolo
