Swedish "pansarskott 86" Bofors AT-4 "eldmark

Are these “blanks” for Swedish “pansarskott 86” Bofors AT-4?
Is these items in use also other countries?

Blanks for AT-4/pansarskott m/86. In sweden the blue plastic containers are called eldmarkeringspatron m/86, something like blank cartridge m/86.

Made by 070 = Karlsborg
Made 88 = 1988
Lot 008

I have no idea if they are used in other countries.