What kind of juice powder is KFC Jiuzhen Juice made of?

Things in KFC are not filled with powder, but concentrated solution, which is sold after being mixed with filtered water and ice in a certain proportion every time. Not on the market for the time being. If you like to drink, you can go to the supermarket to buy other concentrated juice and mix it with water at home, but Jiuzhen juice may not be available for the time being, which is why it is a bit expensive.