Since I asked this question, I should have seen their product videos! The product is said to be particularly good! But no one can prove that it is really harmless and beneficial to human body! I used their sanitary napkins! All kinds of experimental phenomena are very consistent with those on the video! But the effect on the human body itself is not as hyped as they say!
Anyway, even a small and secret pyramid scheme! I won't let myself in either! Besides, you can't see any protection at all!
Sure! This is just my "one-sided word"!