NAICS codes organize domestic production by manufacturing process, while HTS codes classify goods by material composition and end use for trade purposes. A residual NAICS grouping like 32199 can encompass articles that fall into HTS Chapter 44 (wood articles), Chapter 36 (matches), or other chapters depending on the specific product, requiring item-by-item tariff analysis.

Wood charcoal (including activated charcoal) is generally an industrial commodity with no mandatory admissibility review, but importers should confirm correct HTS classification between charcoal for fuel use and activated carbon for filtration, as the two have different tariff treatments. Section 301 tariffs may apply to charcoal of Chinese origin; verifying current order coverage with CBP is advisable.