Tide Rock Holdings, a company that acquires lower middle-market B2B businesses, completed the acquisition of Plastics Design & Manufacturing, a company providing plastics thermoforming services. Financial terms were not disclosed. “The plan and strategy they created to execute this transition were excellent and as seamless as they could be. While this is a big change, my team and I are committed to building on the reputation and relationships we have developed, but also look forward to expanding our business," Trent Cunningham, PDM President.