What is the difference between the Chinese FDA and the US FDA's regulation of medical devices?

Different systems, different ways of regulation, the difference is much to go, to put it simply, China's access threshold is high (cost and time), the follow-up market supervision is relatively weak, and the U.S. FDA, the threshold of access is relatively not low, but the follow-up market supervision is strong, more scientific and reasonable, the regulations and systems are perfect.