When it is doing its job, this is a fan shroud printed in PPS-CF, and it looks like a properly tidy piece of work. The part is black plastic with a curved, cradle-like profile, mounting tabs and screw holes, finished with a textured surface. As a first outing for a filament like this, it reads as a confident start.
The print was run on a CORE One L with the HT setup, and the maker aimed the chamber at 60°C and got there. That is a solid number to confirm, since the chamber is good for 55-60°C. The maker describes the shroud as a first test before moving on to more serious prints, which seems a sensible way to spend a first spool of a demanding material.
A couple of points stand out to me. The part has only a small bed surface, and the maker notes that makes printing without warping easy. On that basis, small parts at a 50°C chamber are expected to be simple. The maker also confirmed that a Core One without the L can do the same, as long as the HT hotend is fitted.
The open question for me is what the more serious parts will be. That has not been revealed yet, and given how this test turned out, I am curious to see them.