• COA: Check batch-specific purity, assay results, impurities and test methods.

• SDS & Specifications: Review the Safety Data Sheet and technical specifications.

• Supplier Verification: Confirm supplier details, batch traceability and document consistency.

• FDA Compliance: Check requirements based on the product type and intended use.

• Import Documents: Confirm shipping documents, packaging and applicable customs requirements.

Example: Before ordering high-purity nicotine, a buyer should compare the COA with the agreed specifications, review the SDS and verify applicable US import requirements.