The US the started trade and economic war with China in order for the US to remain competitive, and if the US wants to continue and make patents a tool to isolate China and others with, then China has got to respond in kind and ignore all US patents. The US is creating havoc on the world. I hope China has the balls to do this and they has every right to ignore all US patents. And BTW, the US has stolen alot of technology from other countries, approved a patent on it, and made it their own. Do it China. And if you don't, China, steal and grab as much as you can, just as the US has done.