How to correctly add multiple suppliers of the same product in opencart?

Question

opencart

There is a price list in the format
Manufacturer;Number;Name;Quantity;Price;Delivery
APP;12345;Item 1;5;55.47;2-3
APP;12345;Item 1;>5;50;3-4
APP;12345; Item 1;>5;60;0
APP;12345;Item 1;1;59;0
I.e. the name number and manufacturer are the same, the difference is only in the quantity and delivery time (sometimes).
If you download the price as is, then it will not be clear how to update it, since the Manufacturer / Number is not a unique identifier.
Also interested in how to work with an inaccurate amount: > 5.
Thank you.

Answer 1

There is no standard functionality in opencart for this task. If only to create as separate goods.