My suggestions... " The apostrophe after "Coatings" is grammatically optional in my opinion, but is made awkward to handle by the bracketed initialism, so I think it's easier (and less fussy) to omit it. I actually think it might read better if you could dispose of the explanation of the initialism in an earlier sentence; something like: "Aurora Marine Coatings (AMC) is <whatever it is>.
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