Because there is no zinc in Japanese characters, lead is used, so lead sulfate = zinc sulfate. . . . . . . . . Ask someone who knows Japanese. . . . . . . This thing can play a very good role in keeping fresh. Cosmetics are also used a lot, which has obvious influence on the taste of food. It doesn't matter. The advantages of this food outweigh the disadvantages. One thing: this thing is carcinogenic and should not be eaten in large quantities.