Import-export is the exchange of goods and services carried out by governments, organizations, individuals or entities in general between two or more different countries. That exchange reflects the interdependence of economic relationships between producers and consumers, specialization in production or the specific origin and quantity of goods and services according to geographical location.
Commercial export is the activity of selling goods and services (tangible such as tangible or visible goods; or intangible such as software, copyright, etc.) to foreign entities on the basis of using currency to Calculate value and serve as a means of payment (either the currency of one of the two countries or the currency of a third country – international payment currency).
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Vận tải hay giao thông vận tải là sự vận chuyển hay chuyển động của người, động vật và hàng hóa từ nơi này đến nơi khác.