Blind patent

You can selectively advertise online or on technology promotion websites, and then contact more foreign websites. If your patent expires, your economic benefits will be gone, and time waits for no one. This kind of patent is incomparable at home and abroad, and its benefits are different. In one case, you should communicate with the developed shoe factories along the coast, but don't tell others all the patents clearly, just say roughly, and you will understand the reasons.