Section 301 tariffs apply to a wide range of products within NAICS 334 when sourced from China, spanning computers, storage devices, communications equipment, and electronic components. The specific tariff list and rate depend on the HTS subheading, so importers must classify each product precisely and monitor ongoing Section 301 exclusion proceedings.

NAICS 334 is a production-based classification used for domestic industry statistics, while HTS chapters 84 and 85 are commodity-based classifications used for customs entry. A single NAICS 334 subsector can map to dozens of HTS subheadings, and a single HTS subheading may capture products from multiple NAICS categories, so the two systems should not be used interchangeably in trade analysis.