3M is a diversified industrial conglomerate making thousands of products across safety equipment, adhesives, abrasives, electronics materials and consumer goods, best known to most people for Post-it Notes and Scotch tape. Its research and manufacturing expertise spans many unrelated end markets, from automotive and electronics to healthcare and construction, a diversification that has historically smoothed out weakness in any single industry. 3M has spent years managing large legal liabilities tied to earplugs sold to the military and to PFAS chemicals used in some of its products, costs that have shaped its balance sheet and capital allocation decisions significantly. The company spun off its healthcare business as a separate public company, narrowing its focus back toward its core industrial and consumer products after decades of expanding into adjacent categories.