Brian Leen, president of North American Inks at Sun Chemical, announced four product managers within the company’s newly reorganized North American business unit. North American Inks has adopted a structure that will provide greater focus on delivering quality, service, and innovation to customers and improving business efficiencies.   “Our product managers play an important role in better meeting the needs of our customers,” Mr. Leen said. “Each of the new product managers brings tremend...