GRIs
General Rules of Interpretation
IMPORTS
Customs / HTS
GRI 1 — headings and notes
GRI 2 — incomplete, unassembled, mixtures
GRI 3 — two or more headings
GRI 4 — most akin
GRI 5 — cases and packing
GRI 6 — subheadings
HTS
Harmonized Tariff Schedule
PART 152
Classification / appraisement
64%