The Bell scissor series with fluorine coating has a fluorine coating on the cutting edge, which makes it difficult for adhesive materials (double-sided tape, poultice, etc.) to stick to the cutting edge.
Bell scissors without fluorine coating are difficult to remove adhesive materials on the cutting edge because they do not have fluorine coating, but there is no concern about the fluorine peeling off when cleaning (with alcohol, etc.).
The sharpness of the scissors themselves is the same for both types of scissors.