Versions

Minecraft Version: 1.12.2
Extra Parts Version: 1.4.6
Silent's Gems Version: 2.8.22
Silent Lib Version: 3.0.13

Actual behavior

Some supported parts' names, like Copper, Zinc and Steel, seems not allocated by the .lang file, it might be got somewhere else, causing its localization failed to be totally completed.

Expected behaviour

Find a way to localize these part names.