Finding Customers across the globe has become a lot easier thanks to technology advancements in the last couple of decades. Usually huge customers can be found for even the smallest business across seas. Just make sure you can handle the growth.
Trade commissioners are located in countries to help companies export products. They collect data on the market and also have access to directories of potential buyers, and can give you that data that is specific to your industry.
In foreign companies you may need to contact the embassies, consulates who can put you in contact with the correct trade commissioner who will be able to help you.
When starting out pick markets with limited regulations so that you get used to the import export process. One of the most costly mistakes in this business comes by not being familiar with a certain regulation and then pursuing it without the proper knowledge.