Beijing Ruide sds non-surgical spinal decompression is not really copied from the U.S. DRX9000, otherwise how would all the appearance patent rights are invalidated?

Since the cancellation of the appearance of the patent right, that the product appearance has been before, it is likely that it will be copied, and even more involved in the issue of patent infringement, but I learned that there is a domestic independent research and development company, seems to be called Zhengzhou Flying Dragon Medical, you can pay attention to, they seem to be all kinds of patents, hope to adopt, hope to be of some help to you.