In the category of products that the U.S. has banned from China, why are high-end medical devices included?

The following friend answered is one aspect, there is also the reluctance to let these advanced medical equipment used in the Chinese people, to solve the Chinese people's illness. U.S. companies do not do very extreme, the most extreme is the Japanese, in fact, the Japanese medicine is very advanced, but not exported to China. Don't want these medicines to solve the Chinese people's diseases. Foreigners are very bad.