diff --git a/locale/en/carbon.cfg b/locale/en/carbon.cfg
index 95fe467..5729954 100644
--- a/locale/en/carbon.cfg
+++ b/locale/en/carbon.cfg
@@ -27,6 +27,9 @@ nanotubes=Nanotubes
 carbon-black=Carbon black
 crucible=Crucible
 
+carbon-fiber=Carbon fiber
+polyacrylonitrile=Polyacrylonitrile
+
 vtk-deepcore-mining-flake-graphite-chunk=__ITEM__flake-graphite__ chunk
 vtk-deepcore-mining-rough-diamond-chunk=__ITEM__rough-diamond__ chunk
 
@@ -44,6 +47,7 @@ nanotubes=Carbon nanotubes
 flake-graphite-synthesis=Graphite synthesis
 carbon-matter-processing=Elemental carbon conversion
 enriched-graphite=Graphite enrichment
+carbon-fiber=__ITEM__carbon-fiber__
 
 [technology-description]
 graphite-processing=Process flake graphite into usable graphite