Sourcing overseas can lower costs and widen your options, but it raises the bar on due diligence. A structured vetting process tells you whether a distant factory is genuinely capable and compliant.

Key takeaways

  • Verify GMP/ISO certificates with issuing bodies, not just PDFs.
  • Ask for references and existing export markets.
  • Run a paid sample and a small trial order before scaling.

Check the paperwork properly

Request GMP or ISO 22716 certificates and confirm they are current and issued to the actual production site. For exports, ask which countries they already ship to and whether they support your market's notification.

Assess communication and capability

Responsiveness, English documentation and a real R&D team are strong signals. Video calls or a site audit (in person or third-party) confirm the factory exists and runs to the standard claimed.

Trial before you trust

Place a paid sample order, then a modest first production run. How the factory handles a small order - quality, timing, honesty about problems - predicts how it will handle your scale.

Guidance compiled by the OEMHallmark research desk. Always verify current certifications, MOQs and terms directly with each manufacturer.