QYB
ChinaPeptides Co., Ltd. (QYAOBIO)
Shanghai, Shanghai · China · est. 2008 · source page added 8 Dec 2023
Custom-synthesis house first, catalogue vendor second. Est. 2008. If you want something unusual made they will quote it honestly and the timeline will be honest too. For stock GLP-1s they are competent rather than exceptional. Technical questions get technical answers.
- Legal name
- ChinaPeptides Co., Ltd. (QYAOBIO)
- Short code
- QYB
- Also known as
- QYB, QYB Biotech, ChinaPeptides Co., Ltd. (QYAOBIO)
- Shop domain
- qyaobiopeptides.com →
- City
- Shanghai, Shanghai
- Established
- 2008
- Community rating
- 99%
- Independent tests logged
- 4
Regional stock, so orders ship inside the buyer’s own country.
- Netherlands (Rotterdam) — European Union, 2-4 days
- Germany (Hamburg) — Germany, Austria, Switzerland, 2-4 days
- United Kingdom (London) — United Kingdom & Ireland, 2-3 days
- United States (California) — United States, 2-4 days
- Canada (Toronto) — Canada, 3-5 days
- Australia (Melbourne) — Australia & New Zealand, 3-5 days
- Genuine custom synthesis capability with realistic timelines
- Est. 2008 with a verifiable entity behind it
- Technical questions get technical answers
- Custom work has custom pricing. Get the quote in writing before you commit
- Stock catalogue purity is good but not the best on this page.
| Date | Service | Compound | Batch | Claimed | Result |
|---|---|---|---|---|---|
| 2026-03-27 | Janoshik | Semaglutide 10mg | QYB-2603 | 98.5% | 98.2% |
| 2025-10-14 | PeptideMeter | Tirzepatide 10mg | QYB-2510 | 98.0% | 98.3% |
| 2025-03-18 | Medutest | Custom 21-mer | QYB-2503C | 95.0% min | 96.4% |
| 2024-08-06 | Janoshik | BPC-157 10mg | QYB-2408 | 98.0% | 97.9% |
| From | To | Carrier | Days |
|---|---|---|---|
| Shanghai | UK | DHL | 7–10 |
| Shanghai | US West | DHL | 8–11 |
- 1[Vendor] WXT order #5 — the Netherlands, 35 days, no drama, receipts insidec/coa · 15k points · 34 comments
- 211 months in and testing is still the thing I get wrongc/vendorvetting · 14k points · 26 comments
- 3what changed for me between week 40 and week 89c/coa · 14k points · 58 comments
- 4related substances — my 21-week log, condensed into one tablec/coa · 13k points · 45 comments
- 5stalled for 23 weeks at 5mg and I refuse to panic this timec/coa · 13k points · 63 comments
- 6[Lab] 20th independent test on QSC, and the trend is the interesting partc/vendorvetting · 13k points · 44 comments
- 7area percent — my 20-week log, condensed into one tablec/coa · 11k points · 58 comments
- 8Medutest — 17 things I got wrong before I got it rightc/vendorvetting · 11k points · 58 comments
- 9[Meta] proposal — a flair for vendor postsc/vendorvetting · 11k points · 67 comments
- 10[Resolved] i accused QYB of a fake COA. i was wrong. correcting the record.c/scamalerts · 806 points · 26 comments
Shipped with a stated storage recommendation and a shelf-life figure tied to it, without my asking.
VendorInvestigate has now seen 4 of their lots through me. Not one has come back outside spec.
Custom synthesis quote came back with a realistic timeline and they beat it. Purity on delivery matched the signed spec.
Pleased to find they hold stock in Canada. Domestic dispatch, day 4, no customs step at all.
Eighth order from them, all BPC-157 10 mg. Sent one vial from each to PeptideMeter and the whole set landed inside half a point of each other. That flatness is exactly what I pay for.
The certificate for lot QYB-26-483 carried method, wavelength, water content and an itemised related-substances table. Complete on the first pass.
Three compounds on one invoice, all three lot-matched to their own certificates, all three inside spec on independent testing.
Peptide content reported at 99.3% alongside the purity figure, so I could convert straight to a working mass.
Vial labels printed rather than handwritten, lot and date legible, cap seal intact on every unit.
Asked a genuinely technical question about pre-dispatch storage and got a reply with numbers in it, inside 8 hours.
Costed them per mg against three other suppliers on the same semaglutide 5 mg spec. Competitive on price and clearly ahead on documentation.
Moved here after two bad lots elsewhere. 6 orders in and the VendorInvestigate numbers have been flat every single time.
8 orders in eighteen months, no substitutions, no reformulations, everything in stock when the site said it was. Boring is the highest compliment I have.
Ordered on a Monday from their warehouse in the United States and it was here by day 4. That is the whole case for regional stock.
Cold pack was still hard on arrival in Cork on day 5. My logger never went above 4°C across the whole run.
Every certificate I have from them is lot-specific. Not one batch-level document in 8 orders.
Vials wrapped individually, foam cut to fit, nothing loose in the box. Packing that has clearly been thought about.
Same lot documentation as the factory ships, but out of their warehouse in the Netherlands, so it landed on day 3.
Support answered on a Sunday, correctly, with the batch record attached. That is well beyond what I expected.
First order, deliberately small, PT-141 10 mg only. Documentation, transit and a Medutest result at 98.1% all checked out, so the next one will not be small.
Queried the related-substances total on lot QYB-24-910; they came back with method, column and detection limit. That depth is rare.
Their warehouse in Canada had the selank 10 mg in stock and it shipped the same afternoon. Tracking never left the country.
Good communication throughout, accurate lead time, and the parcel arrived on day 2.
Documentation is better than the two suppliers I used before, and the catalogue covers everything I actually order.
They report purity by RP-HPLC with the wavelength stated and peptide content separately. Two different numbers, correctly separated.
Submitted the LL-37 5 mg to PeptideMeter blind, without telling them the source. 99.0% against a stated 98.9%. The number holds up when nobody knows whose vial it is.