The patent does exist, and the patentee is Zhu Yafu, who did not transfer his rights in the process, bu
The patent does exist, and the patentee is Zhu Yafu, who did not transfer his rights in the process, but it does not rule out that he licensed it privately. At present, patents have lost their rights because they don't pay annual fees.
But the advertising effect is not guaranteed. Many advertisements focus on the tears of consumers. When there is a demand, I buy it as soon as my brain is hot. I also spend a lot of money. Now I can't trust TV advertisements and online advertisements easily. I suggest you go directly to a better hospital. Their suggestions are definitely better than those that some people have come up with out of thin air. I wish you a speedy recovery.