A trade deal announced by the U.S. and Vietnam creates new question marks for sportswear and clothing retailers like Nike and Adidas that source shoes and clothes from factories in the Southeast Asian country,

With the dust far from having settled on this week’s US-Vietnam trade agreement, one thing is clear: companies operating in what’s become one of the most vibrant Asian economies are on notice to move up the value chain.

President Donald Trump announced a trade deal with Vietnam Wednesday that would allow U.S. goods to enter the country duty-free.