About toothpaste with fluoride that you mentioned, the supermarket located at the basement (level 1) of Far Eastern Department Store which is to the southeast of Tianfu Square across the street carries many western brands of toothpaste both with and without fluoride. I remember seeing the “Triple Action” toothpaste. They also carry a couple of western brands of laundry detergent, such as “Arm and Hammer”. You can also find milk that’s imported from Australia and Germany.