CIRCLE PINES, Minn. (AP) _ Northern Technologies International Corp. (NTIC) on Thursday reported fiscal first-quarter earnings of $502,000.

On a per-share basis, the Circle Pines, Minnesota-based company said it had profit of 5 cents. Earnings, adjusted for amortization costs, came to 6 cents per share.

The rust and corrosion prevention company posted revenue of $20 million in the period.

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