| Building | Materials | Product | Passive? | ||||
| Scholar Station T4 |  | Refined Fine Leather | 1 |
 | Proficient Leather Research | 1 | No |
 | Proficient Study Journal | 1 | |||||
| Building | Materials | Product | Passive? | ||||
| Scholar Station T4 | | Refined Fine Leather | 1 |
| Proficient Leather Research | 1 | No |
| Proficient Study Journal | 1 | |||||