The data published with NAICS code 335121 include the following SIC industries:
3089 Plastics products, n.e.c. (pt)
3645 Residential lighting fixtures
3999 Manufacturing industries, n.e.c. (pt)
This definition comes from the 1997 NAICS manual. However, for this industry, the 1997 Economic Census Manufacturing did not fully implement the conversion to NAICS. Data for NAICS industry 335121 include establishments primarily engaged in the manufacture of plastic lampshades. The NAICS definitions will be fully implemented with the 2002 Economic Census.