Customs Audit Defence

Valuation Compliance

Sourcing decisions for injection moulding operations often involve complex pricing structures, especially when comparing virgin and regraded materials. Developing a customs audit defence involves documenting the exact transaction values and any tooling assists provided to overseas molders. The total cost of the imported parts must include the value of the molds or design services paid for by the importer.

If these assists are omitted, customs authorities can reassess the duty and apply penalties.

Material Classification

Importing bulk resins or masterbatches requires precise alignment of the technical datasheets with the customs tariff. The documentation must clearly distinguish between raw polypropylene and compounds containing glass fibers or flame retardants, as these additives shift the tariff subheadings. In a customs audit defence, importers must present independent laboratory test reports showing the specific gravity and polymer composition of the resin.

This proof helps verify that the declared codes match the physical properties of the material, avoiding costly classification disputes. It also demonstrates that the imported polymer falls within the declared chemical categories, which is essential when the importing nation imposes restrictive quotas or anti-dumping duties on specific chemical structures.

Record Verification

Retrospective audits can target shipments from several years prior, demanding that every import record is complete and accessible. To construct a reliable customs audit defence, polymer processors must maintain consistent files that link purchase orders, bills of lading, and material test certificates for every batch. The documentation must prove that any regrind used in the parts complies with origin rules and environmental declarations.

Maintaining these files prevents administrative errors from escalating into accusations of duty evasion or non-compliance.