Creating a new option, certifying it for different processes, and getting it into full production takes a long time and costs a lot of money. The semiconductor

Creating a new option, certifying it for different processes, and getting it into full production takes a long time and costs a lot of money. The semiconductor industry has made a variety of inconvenient changes (I.e. photoresists) in the past for the purpose of reducing toxicity. I suspect that this is a more challenging problem than you think.