You can edit the infrastructure on planets, add or remove factories, restart extractors, etc., remotely from other systems, but in order to send ready-made materials to customs from the cosmodrome (“Launch Pad”), you definitely need to be in the system in which your planets are located.
The simplest processing : “Basic Industry Facility”.
Refined Planetary Materials : “Advanced industry Facility”.
Specialized Planetary Materials : “Advanced industry Facility”
Advanced Planetary Materials: “High-Tech Production Plant” – only on Barren & Temperate planets.
The energy demand of the links between the structures depending on the distance:
Planetology, Advanced Planetology: