Help with abbreviation

[George Fowler]

Can anyone help with the abbreviation AZS from the following context?
I can't find it in the dictionaries available to me, including
several business dictionaries. Probably something simple though.

My imeem oborot 1 500 000 000 $ v god ot prodazh v supermarketax,
drugix mazazinax, AZS ot optovyx prodazh.

Thanks! Please reply to me personally, not to the list.

George Fowler
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George Fowler                                [Email] gfowler at indiana.edu
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