Refinement Facility

Overview
The Refinement Facility allows the player to process Tier 3 Resources into Tier 4 Resources. 5 of a single Tier 3 resource can be used to make 1 of the corresponding Tier 4 resource, requiring 18 hours to process. The resources that the Refinement Facility can produce are as seen below.

Conversion
The resources can be used to promote units to Rank 5 to 9, and to train certain advanced units:
 * Dragon
 * Heavier Tank
 * Zoey's Trebuchet
 * L7 Sandworm Drill
 * Railgun Buggy
 * Lightning Trooper
 * Cryo Trooper
 * Radio Tech