Foreign trade is about import and export, but that by no means makes international trade simple. It takes a considerable amount of preparation and planning to enter a foreign market.
A company must modify its organizational design to manage the complex legal, political, cultural, environmental, linguistic, and economic factors that influence international trade. For example, Caterpillar cannot expect to export their excavating equipment to a foreign company just because there is a need potential for bulldozers and backhoes.
A bulldozer made for the US market will be almost useless in many other countries. They may not meet the environmental standards for some countries, and they may be over engineered for others. Most importantly, foreign mechanics could not fix them unless caterpillar re-tooled them for metric systems. Imagine the disappointment of investors if Caterpillar doubled production with plans of exporting their equipment only to find that no foreign mechanics could work on the new equipment. It would be disastrous.