@miyuko You would typically outsource it to a company that does this stuff (they apparently still exist!); they will charge you a fixed cost to create a 'master', which is used as a 'stamp' to then press copies at high speed, at an additional per-unit cost.
Doing it yourself, I think, requires quite a lot of expensive equipment (which is why small-volume CDs usually get burned, not pressed).
@miyuko No problem :)
To my knowledge, the still-existing CD pressing companies mostly do special releases; a bit like the vinyl record manufacturers, they primarily appeal to nostalgia.
Though I think that optical media may still be in widespread use in Japan? Not sure if that's still true today.