China Vitamin Supplement Sourcing

I need a reliable supply chain for vitamin-based dietary supplements manufactured in China. The job involves identifying reputable pharma-grade factories that already export supplements to regulated markets, confirming that they hold valid GMP and ISO certifications, and gathering the full commercial details I will need to place an order.

To make the decision straightforward, please deliver:
• A vetted shortlist of at least five vitamin supplement manufacturers or trading companies, each with current certificates, product catalogs, MOQ, lead times, indicative EXW / FOB pricing, and available private-label options.
• Independent verification—photos, third-party audit reports, or recent customer references—that proves production quality and export experience.
• A side-by-side comparison table showing quality standards, capacity, and payment terms.
• Your recommendation for the most cost-efficient and reliable candidate, with a brief risk assessment and next-step plan for sampling.

I will handle sample costs and freight once I select suppliers; please include shipping methods and estimated transit times so that I can budget accurately.
All information must be gathered ethically and kept confidential.