1. In a large plastic, resealable bag, place orange juice concentrate, lemon juice, Hoisin sauce, canola oil, ginger and garlic. Seal and shake to mix. Add chicken wings, seal and shake to coat evenly. Refrigerate overnight, or up to 3 days.
2. Preheat oven to 400F. Line a large sheet pan with aluminum foil. Spread wings on foil. Bake for 45 minutes, until brown and shiny.
3. Transfer to serving platter and sprinkle with scallions.