Germany’s Nexavar was the first to come out, and it is patented, so it is also the best. For example, if the German Nexavar is equivalent to the exquisite dishes in a big hotel, then other imitation Nexavar is equivalent to the barbecue from street stalls. Although the price is different, the difference in taste and hygiene is also considerable. Behind the patent rights obtained by Nexavar in Germany are long-term, large-scale and rigorous clinical trials, high research and development costs, and unanimous certification by several authoritative international medical organizations. Especially for oncology prescription drugs that are related to life, patents and patents must be used. Authoritative certification is a guarantee, otherwise it is irresponsible for life. What these patients cannot see is what generic drugs cannot reach.