- Article III of the GATT relating to principle of non-discrimination.
- Governments are required to impose no internal tax or regulation that protects domestic producers over foreign producers.
- Imported products must be accorded treatment no less favourable than domestic products.
- Local content requirements or restrictions on the basis of the national origin of goods used in local production are incompatible with GATT.
- Exceptions allowed only in the case of regional trade agreements.