HOUSTON--(BUSINESS WIRE)--Distribution International, Inc. ("DI"), a leading distributor and fabricator in the mechanical insulation market, today announced it has acquired 3i Supply Company ("3i Supply"). Headquartered in Midland, Michigan, 3i Supply is a distributor of mechanical and industrial insulation, fabricated products, refractory, and removable insulation pads. Houston-based DI, a portfolio company of global private equity firm Advent International, is pursuing a growth strategy cente