Tariffs loom over Quebec's ADF Group as stock value crashes on lower sales, profit warnings

ADF Group Inc. DRX-T, a Canadian maker and designer of complex steel structures, saw its stock market value crash after it warned of lower sales and profit in coming months as U.S. tariffs drive up its business costs and undermine the certainty it needs to clinch new orders. The Terrebonne, Que.-based company, which manufactured the steel structure and spire for the One World Trade Center tower in New York among other projects, reported growth in both revenue and earnings for its latest fiscal year ended Jan. 31. But it said those positive results are now overshadowed by the fallout from…