Under the WTO agreements, countries cannot normally discriminate between their trading partners. Grant someone a special favour and you have to do the same for all other WTO members. This principle is known as most-favoured-nation (MFN) treatment. It is so important that it is the first article of the General Agreement on Tariffs and Trade (GATT), which governs trade in goods. MFN is also a priority in the General Agreement on Trade in Services (GATS) (Article 2) and the Agreement on Trade-Related Aspects of Intellectual Property Rights (TRIPS) (Article 4), although in each agreement the principle is handled slightly differently. Together, those three agreements cover all three main areas of trade handled by the WTO.
Accordingly, Vietnam shall accord to investors of another Party treatment no less favourable than that it accords, in like circumstances, to investors of any other Party or of any non-Party with respect to the establishment, acquisition, expansion, management, conduct, operation, and sale or other disposition of investments in its territory. See more: https://unctad.org/system/files/official-document/diaeia20101_en.pdf
In the event that the MFN principle is broken in the territory, Pinklaw will enforce this commitment on your behalf.