Put the chicken wings in a large bowl or Ziploc bag.
Combine the soy sauce, sugar, water, ginger, oil, pineapple juice, and garlic powder in another bowl then stir well.
Pour this mixture over your chicken wings then refrigerate them.
If you are using a bowl, cover it. If you are using the bag, then squeeze out any excess air then seal it.
Let the wings marinate in the refrigerator overnight.
Preheat the oven to 350 degrees F (180 degrees C).
Arrange the chicken wings on a foil-lined baking sheet then bake for 50 minutes or until done.