Supermarkets will soon be able to stock more Fair Trade-certified products, in an expansion that promises to extend the label's presence far beyond the core of coffee, chocolate and oils. Last month, Transfair USA, the only independent certifier of fair trade products in the United States, announced it would begin certifying all products covered by Fair Trade's principal organization, Bonn, Germany-based Fairtrade Labeling Organizations International. More than two dozen new products will be eligible, including many fruits, vegetables, spices, juices, grains, nuts and oils. With more than $1 billion in yearly sales, American consumers seemed ready for more products, according to Transfair. Newly labeled items will start appearing on retail shelves this summer.