The lexicon of the top500 ( The Encyclopedia for Classification Codes ) explains the codes and definitions in the world of economical classifications.
NAICS Code 3341 Computer and Peripheral Equipment Manufacturing
The NAICS Code 3341 is described as
Computer and Peripheral Equipment Manufacturing It belongs to the code group
NAICS Code 334 Computer and Electronic Product Manufacturing
To this Code "3341" belongs the sub codes
NAICS Code 33411: Computer and Peripheral Equipment Manufacturing