Nobody should be pressured into doing something they don’t want to do, but…
While Taiwan could be considered fairly conservative culturally in many respects, it’s not super religious either. When it comes to sex, women aren’t chasing men down in the streets, but I don’t have the sense that women have many hangups about jumping into the sack before marriage. To the contrary, I think that’s the norm.
I could imagine that for a lot of young Taiwanese women, especially in the major cities, a man who took them out on a bunch of dates and didn’t try to escalate to the bedroom would be seen as a bit of an oddball, and not in a good way. I’d guess some of them might wonder if the guy was gay, had some sort of health or emotional issues, etc.
So to the extent that a guy here is looking to date, the intent not to have sex before marriage is probably something that should be disclosed fairly early on. My guess is that this would substantially reduce the OP’s dating pool but if he’s willing to lavish dates with expensive meals and experiences with no expectation of sex in return, he’ll no doubt have success at being a friend with (financial) benefits.