NAICS 327113 — Pottery, Ceramics, and Plumbing Fixture Manufacturing 
BEA sector: Clay product and refractory manufacturing
Activity: Alumina porcelain insulators manufacturing
Activity: Beryllia porcelain insulators manufacturing
Activity: Insulators, electrical porcelain, manufacturing
Activity: Magnets, permanent, ceramic or ferrite, manufacturing
Activity: Porcelain parts, electrical and electronic device, molded, manufacturing
Activity: Spark plug insulators,  porcelain, manufacturing
Activity: Steatite porcelain insulators manufacturing
Activity: Titania porcelain insulators manufacturing