%chance to poison additive? ( from diff instances)

Ok so i'm trying to decide if i should buy a 6linked cospri's for my build, but to be honest it has bunch of drawbacks i'd have lower crit, lower life, need resists from elsewhere etc....

the question is:
if i have these poison % instances:

- 40% chance to poison bleeding enemies ( assassin ascendancy noxious strike)
- 30% chance to poison on crit with dagger ( adders touch)
- 25% chance to poison bleeding enemies ( dirty techniques duelist aurea of tree)

so if an enemy is bleeding, do i have 95% chance to poison each crit, which could be considered more or less as " always poison on hit bleeding enemies?" or does the random generator roll 3 times for each crit with the consisting %chance, or how does it work exactly??


pls explain

Yeah, it's additive, you would have 95% chance to poison bleeding enemies.