Trade agreements are formal agreements established between two or more nations, outlining the terms and conditions under which they engage in collaborative trade activities to achieve mutual economic advantages. These agreements govern the imposition of import levies, taxes, and duties by countries. The South African Customs Union (SACU) involve the following countries: South Africa Namibia Lesotho Botswana Eswatini   Import or export between these countries are duty-free. We would advise that you familiarise yourself with Trade Agreement South Africa.