The ingredients list shows acesulfame K and aspartame.
Tips
usage
Calorie-free sweetener about 200x sweeter than sugar, often blended with aspartame (阿斯巴甜 āsībātián) or sucralose (三氯蔗糖 sānlǜ zhèsuǒtáng) to mask aftertaste. Watch for it on diet drink labels.