How is the international logistic process like for Spanish olive oil?

Most of the olive oil products are sent through sea freight, in reefer containers, and only small batches are sent through the air. For destinations within the EU, land transportation through trucks can be used to lessen logistics cost. The product is placed in pallets and loaded to the containers. It is vital to maintain the right temperature and avoid product's direct exposure to sunlight. Otherwise, the quality of olive oils may be affected. This is also the reason why olive oil bottles are dark.