3M
Estimated Cost: $120 million
Manufacturing giant 3M makes a wide variety of goods necessary for making an even wider variety of other goods. As such, there are a lot of ways the tangled web of international supply chains can result in higher costs due to tariffs. 3M executives say tariff-related costs in 2018 went as high as $20 million. They expect those costs to rise to around $100 million for 2019.