Pick the P1 materials you produce. Everything they lead to appears in P2, P3 and P4. Click any product to trace its full recipe.
Recipes per cycle: P2 = 40 + 40 P1 → 5 units. P3 = 10 of each P2 → 3 units. P4 = 6 of each P3 (plus 40 P1 where listed) → 1 unit. P4 needs a High-Tech Production Plant, which only fits on Barren or Temperate planets.