Meaning
International tariff codes categorize primary polymers of ethylene under a specific six-digit heading to govern customs duties and trade compliance. Importers and exporters of raw resins rely on customs classification hs 3901 to document shipments of polyethylene and copolymers containing at least ninety-five percent by weight of ethylene.
Tariff Division
The heading is subdivided based on specific gravity and chemical composition. Low-density and high-density polyethylenes are assigned distinct subheadings, which carry different duty rates depending on the country of origin and bilateral trade agreements. Copolymers of ethylene, such as ethylene-vinyl acetate, are also classified here provided the ethylene monomer dominates the polymer chain.
Misclassification can result in delayed shipments and severe financial penalties. Consequently, global distributors must maintain rigorous documentation linking each resin grade to its correct subheading.
Density Specification
A critical boundary exists at a specific gravity of zero point ninety-four. Resins with a density below this value fall under the subheading for low-density polyethylene, while those at or above it are classified as high-density polyethylene. Because this distinction is based strictly on physical density as measured by standardized laboratory test methods, compounders must ensure that their technical datasheets accurately align with the declared tariff codes.
Regulatory Compliance
Customs audits often require presenting certificates of analysis to verify the composition and density of the imported resin. This document must confirm that the polymer is in a primary form, such as pellets, granules, or powder, because converted items like film, sheet, or molded components belong to different chapters of the tariff schedule.
