Sunflower oil vanishes as Ukraine War Grinds On.

[ProfessorGAC]

17. Quite Common Cooking Oil

Very high in polyunsaturated chains. Nearly 68% of the chains have 2 or more double bonds.
Peanut oil is a very good substitute, though.
Sunflower has more linolenein (3 double bonds among 18 carbons), but peanut has some, but more linolein (2 double bonds among 18 carbons.)
After refining, they're both low in flavor & have identical smoke points (450°F) making them both very good for pan frying.
Canola is another good replacement, though it has a lower smoke point.
I actually visited a sunflower seed processing plant in Martfu, Hungary 20-25 years back. Very modern & efficient.
Milling, crushing, oil extraction & oil refining. One oddity: farmers brought the raw material to the plant in everything from 40' hopper trucks & railcars to ox drawn carts. It was quite the dichotomy.