If speculation that China will repeal a tax rebate for its soda ash exporters is true, that could mean a profit windfall for American firm FMC , Cramer says.

FMC, formerly known as the Food Machinery Co., is already the world’s number-two producer of soda ash, and it does so at a much lower cost than its Chinese counterparts. A repeal of the subsidy could give the company the last leg up it needs to overtake the competition.