Domestic vs. Imported Botox, which was better?

My nasolabial folds have deepened, so I am planning to start Botox treatments. There are various types of Botox with price differences, and most importantly, they are distinguished by whether they are domestic or imported. I am curious about the experiences of those who have actually received both. What differences did you notice after trying both? Did the interval between treatments take a long time? Were there any differences in foreign body sensations or post-procedure sensations?