The European Union (EU) operates as a single market with a unified set of trade regulations aimed at ensuring smooth commerce among its member states while maintaining fair trade with non-EU countries. These regulations cover a wide range of areas, including goods, services, tariffs, and non-tariff barriers. Within the EU, goods can move freely across borders without customs duties, quotas, or regulatory barriers. However, imports from non-EU countries are subject to the EU's Common Customs Tariff, which standardizes duties across all member states. Additionally, businesses must adhere to EU product standards, labelling requirements, and safety regulations to ensure conformity. For companies looking to trade with or within the EU, understanding these rules is essential to remain compliant and competitive in the global market.