You can export or import a stock item to another new company.
Load both the importing and exporting companies in TallyPrime.
Select the Company from which the Stock Item has to be exported.
Go to Gateway of Tally > Alter > Stock Item.
Alternatively, press Alt+G (Go To) > Alter Master > type or select Stock Item > and press Enter.
Select the required stock item.
In the Stock Item Alteration screen, press F3 (Company).
In the Change Company screen, select the company in which the stock item has to be imported.
The Stock Item Alteration screen for the selected company appears, press Ctrl+A to save the stock item.