If you are looking for Information about PSU Clementine, Go check their Wiki
Item exchange missions
From The re-PSUPedia
Item exchange missions are special missions that allow you to exchange various items such as PA Fragments and synthesis materials for new items like photon art disks and room decorations.
GUARDIANS Colony
GUARDIANS HQ
- Gifts from Beyond
- Dark Crystal Seeker
- Gifts from Beyond+
- Ice Crystal Exchange
- Chronicles HQ
- The Doctor's Request
- Chronicles HQ 2
- Falling Sky Park
- Chronicles HQ 3
- Supervisor's Edict
- Urban Defense
- Chronicles HQ 4
- Engineer's Challenge
R&D: Trading Station
Resident Security Department
- RSD: Trading Station
- Special Trading Stn.
- Special Exchange 2
- Special Exchange 3
- Special Exchange 4
- RSD: Drop-off
- GAS
- Stamp Shop
- Reward Trading Post
- PA Trading Post
- Crystal Trading Post
