Importers should have a phytosanitary certificate from the exporting country, a certificate of analysis confirming THC content at or below the legal threshold, and documentation of the fiber's processing state. CBP may request additional evidence that the material is industrial hemp rather than a controlled substance, so retaining supplier certifications and lab test results is advisable.

Heading 5302 covers only the bast fiber of Cannabis sativa L. in raw or pre-spinning form, along with its tow and waste. Hemp seeds are classified under the oilseeds chapter, and hemp seed oil falls under the vegetable oils chapter. A shipment containing both fiber and seed components may need to be classified separately by component.