pailak mzikian shows us the world's biggest sorting facility >> this is where we start unloading. you can see how they're hard at work. we get 400 tons a day. it all comes from our subsidiaries, efiba and retextil. they collect used clothing germany-wide. >> efiba gathers donated clothing for a number of charities, not just the red cross. but soex isn't a charity -- it's a for-profit organization, and the clothing is a commodity. >> it's not going to be donated to africa. no way. that wouldn't make sense anyhow, both from an economic and sustainability point of view. we're a full-profit company at soex, not an ngo. >> soex may not be a charity -- but the german red cross is. we head for tanzania, in eastern africa. it's one of the largest recipients of donated clothing on the continent. over 20-thousand tons of used textiles arrive here every month. dar es salaam is a bustling city of three million. most of its residents live on less than a euro a day. we're told that most of the people on the street are wearing donated clothing from europe and the united states. on almost every c