Precisa is made by Fuji, unless there is soneone else in Japan making slide film. I have some in my fridge and it's marked "made in Japan." I bought it based on a rumor it was Astia but now word is its more like an amateur version of Provia. I haven't shot any of mine yet.
I've read it is Sensia, which I always thought was closer to Astia than Provia.