(3) Determination of import duty uniformly Explanation: Non-tariff barriers to trade include import quotas, special licenses, unreasonable standards for the quality of goods, bureaucratic delays at customs, export restrictions, limiting the activities of state trading, export subsidies, countervailing duties, technical barriers to trade, sanitary and phytosanitary measures, rules of origin, etc. Determination of import duty uniformly is comes under the sovereign duty of a nation. It is internal development.