Resources · verify manufacturer vs reseller
How to Verify a Peptide Manufacturer vs a Reseller
A factual checklist for overseas B2B buyers evaluating China peptide supply partners. Focus on lot docs, process clarity, and commerce honesty — not gray-mall keywords.
1. Ask for lot-level PDFs
Request COA / HPLC (and MS where specified) for the actual lot you will receive — not a generic marketing PDF.
2. Match identity & purity claims
Cross-check peptide identity, assay method, and purity % against your specification. Prefer suppliers who publish sample vault entries and process honesty.
3. Separate Track A vs Track B
Confirm whether the SKU is purchasable under MOQ or RFQ-only. Opaque “contact for price” on every SKU without MOQ logic is a yellow flag for B2B ops.
4. Check compliance boundaries
Avoid suppliers pushing Melanotan, dosing calculators, weight-loss DTC, or consumer performance aisles when you need industrial/cosmetic raw-material supply.
5. Verify packaging & docs scope
For OEM, lock label languages, carton, and release-pack contents before PO. Peptisova scopes this via Quote Cart.
6. Ask manufacturer vs trading-company questions
Process ownership, analytical release, and who signs the COA matter more than stock photos. Use the Company Fact Sheet as a citation-friendly baseline.
Red flags
- • Melanotan / performance / clinic-dispense merchandising
- • Reconstitution or dosing calculators as primary UX
- • No downloadable lot COAs — only badge walls
- • Crypto discounts as the main payment story
- • Every SKU “contact for price” with no MOQ logic
Related reading
Frequently asked questions
How do I tell a manufacturer from a reseller?
Ask for lot-level COA PDFs (not generic marketing sheets), process clarity (HPLC/MS), honest MOQ/Track A vs RFQ logic, and compliance boundaries. Vague “contact for everything” without docs is a yellow flag.
What red flags suggest a gray mall rather than a manufacturing partner?
Melanotan/performance aisles, dosing calculators, consumer weight-loss ads, crypto-only discounts, and missing lot COAs. Peptisova declines those patterns.