To ensure cross-border compliance, prioritize suppliers with HACCP (Hazard Analysis and Critical Control Points) and ISO 22000 (Food Safety Management) certifications. For specific markets like the US, FDA registration is required, while the EU mandates compliance with EFSA regulations regarding pesticide residues and heavy metals. If targeting niche markets, verify Halal or Kosher certifications, and always ensure the supplier provides a Certificate of Analysis (COA) for every batch to confirm the absence of prohibited preservatives like formaldehyde or sulfur dioxide.