It was not copying that mattered. It was dangerous and unsafe products. And gull to export them.
Don't export them. It is China who has a huge chip on their shoulder. They know they are pushing (unsafe) craps to the world, and now turn around and say they are blamed merely for "underperformance." It is not just underperformance. If it were, things would not have been this controversial. Japanese and S. Korean products all underperformed, and were called junks in the past. But they are just junks. They did not have deadly chemicals in them, or unsafe enough to wound or kill consumers.
If Chinese do not mind consuming such unsafe and deadly products, that is their business. I do not understand why they are exporting them overseas in such a massive quantity.
Neither Japanese nor S. Koreans did that. Actually back in the past, quality control for export items was markedly stringent than those for domestic consumption.
You do no want to lose faith to the world. Then do more stringent quality control on export items. Voluntarily ban items which can create really bad publicity.
Finally, don't think that past S. Koreans are on the same league as current Chinese on this matter. It is two or more order of magnitude higher for Chinese.