Purchases of services of the overseas tourists can be considered as an export item that are not visible with the eye (Invisible Export) as it is to buy foreign currency. The production of items are services that travelers buy it will require investment.
Using the services of foreign tourists. It is Exports are invisible to the eye (Invisible Export) for the purchase of foreign goods production is a service that tourists buy, they will need to be invested.
Service purchases of foreign tourists, is regarded as the packing unseen eyes (Invisible Export) because it was bought by the foreign exchange. Production of products is various services.