we meet dario blanco, head of the iquique free trade zone users assication. s the situation is improving. dario: what i can say is that the clothing import companies want to help things improve. they want to address the negative impact of their business model. the situation is definitely going to change. reporter: most of the clothing is made of synthetic fabrics and takes years to biodegrade. this family sifting through the piles of used clothes are refugees from venezuela. they're looking for clothes they can wear, and also anything they can sell. sofia: my two children and i came through the desert. we had to leave behind our suitcases containing all our clothes, or we would never have made it. i've used up all my savings. reporter: everywhere we go, we see refugees who have traveled through the desert. despite the scorching midday sun, this family wants to keep going until they reach iquique, where they hope to find work. the city is 200 kilometers away. the family looks exhausted. andrÉ: it's hard. it took us four days to get here from the border, twenty

created and a container port was built. companies operating here enjoy various tax exemptions. dario blanco, head of the key k free trade zone uses association kohls the soft, re a roaring success in economic terms, at least had put up a fella from a franca. m come one of the free trade. joan was a political project. it meant that a lot of people from elsewhere settled here, not in the arid desert region when people who are in a future frequently created economic advantages for people who move t k for work as well as for investors will. i'm been a chunk life, a lesson, yet. importers of discarded and unsold clothes, also benefit from tax exemptions. we come across american brands as well as governments that a clearly from germany, dealers distinguish between 3 categories. yeah, and for the fit i am oh, the worst category is clothes with stains or homes in grow that go white. we does garden, i and if it goes to like, let me be within an estimated 40 percent of what's imported ends up thrown out when they come with it varies from container to container anyway. sometimes the contents are in go