Oxygen concentrator — air can also make a profit

Were with his wife in Rostov, went to the shopping center. I look, there is a small brightly decorated booth in the lobby and the people around it are crowding. I come closer-some cocktails are sold. Began to ask the seller that yes how. The new service, says, right with you, based on natural juices using an oxygen concentrator, an oxygen cocktail is prepared, which is not only tasty and unusual, but also very useful. And let’s list what problems it helps.