335991  Carbon and Graphite Product Manufacturing

This U.S. industry comprises establishments primarily engaged in
manufacturing carbon, graphite, and metal-graphite brushes and brush
stock; carbon or graphite electrodes for thermal and electrolytic uses;
carbon and graphite fibers; and other carbon, graphite, and
metal-graphite products.

The data published with NAICS code 335991 include the following
SIC industry:

3624 Carbon and graphite products