PCB works as support of electronic component, it is also the carrier of connected components. The main function is support and connecting.
Considering the importance of PCB function, the death of PCB is far far away, because there is no replacement object, even similar onces. However, pressure also here, environment protection is a hot topic in PCB industry. The China government is being more strict as time moves, PCB manufacturers need to reduce pollution output and put more energy on pollution cleaning instead of moving factory to a new place.
Only in this way, the industry can keep growing in a health way.