How do i import Product Variant details like extraprice and barcode of each variant  ?

below are sample data that i need to import

Product A will have following variants
-> 1 KG

extra price 100

barcode : 100

-> 5 KG extra price 500

extra price 500

barcode : 500

-> 15 KG extra price 1500

extra price 1500

barcode : 1500

how do i make an excel for importing that into odoo

i only found a way to import product with variant but not with variant value (like extra price and barcode)

any help is appreciated :)