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‘How We Grew,’ by the Pittsburgh 100 companies

9. Gunning Inc.


Gunning, which provides commercial and industrial HVAC systems and sheet metal fabrication, has been on the list five years in a row. “We attribute our success to our expertise in our field, quality craftsmanship and reputation in the region,” said President Dawn Kaelin Gunning. Last year, the company expanded its estimating and fabricating capabilities, which Gunning said enabled the company to double its revenue.

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