It's right to use the world query SMS to spray code. Are you sure this is genuine?

Basically, it can be confirmed to be correct (but the number of queries for this code cannot be too many).

Because this code belongs to the data of anti-counterfeiting and anti-channeling, each code is different and irregular, and other manufacturers can't calculate it, so it is difficult to impersonate. Even if the counterfeiters collect a batch of fake codes, there will still be the problem of | "being queried too many times".