Is all timothy hay ok?

I have fussy chins (I think that's the norm) and I bought some of the science selective timothy hay. My boy loves it. It's way greener than other timothy hay I've seen and smells amazing but different to other browner hays but is sold as being for rabbits. It's 100% timothy hay but is it ok?

Are there types/brands etc. Of chinchilla safe hay like meadow and timothy that we shouldn't be feeding them?

Is the science selective rabbit timothy hay ok? (Link below)
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Is all timothy hay ok?