By the time customers visit Ace ImageWear’s Houston facility, most already understand what makes the company different. They know their route driver by their first name. Their troubles with missing garments have disappeared. And often, they don’t think about the upkeep of their company’s uniform program at all—exactly the way Ace ImageWear wants it.

For more than 90 years, the family-owned company has grown on a simple promise: Do what you say you’re going to do. In a market sector increasingly dominated by national providers, Ace ImageWear has carved out a niche in the industrial space with a disciplined path—blending ...