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Sourcing reference

ChinaPeptides Co., Ltd. (QYAOBIO)

Known here as QYB — also QYB Biotech, ChinaPeptides Co., Ltd. (QYAOBIO)

Base
Shanghai
Established
2008

Visit the shop: qyaobiopeptides.com → — we take nothing from them and a link is not a recommendation.

That link goes straight to the supplier’s own shop. We take nothing from them and a link is not a recommendation — read the rest of this page first.

4.9

★★★★⯨

from 1.1k member reports

A rating here summarises what members have said about ordering. It is not a safety rating and it cannot be one.

ChinaPeptides Co., Ltd. (QYAOBIO), trading as QYB, based in Shanghai and giving 2008 as its founding year. Members have ordered from here and reported back; what follows is theirs, not the company’s.

What members have reported

Including the reports that do not flatter anybody.

Members describe ordering as straightforward. Transit sits in the one-to-three week band most of the time, and the cold pack usually arrives cold. The reports that matter most are the ones where something went wrong, and those are below with the rest.

Communication is described as quick and a little formulaic. Members who asked a precise question generally got a precise answer; members who asked an open one got a template.

The testing record, and its limits

QYB publishes third-party reports against catalogue items, and several members have commissioned their own testing rather than relying on those. Independent results have broadly matched the published figures.

What a purity figure proves is narrow. It tells you what proportion of the peptide present is the peptide you wanted. It says nothing about how much peptide is in the vial, and nothing about sterility. Those are separate measurements and they are not always supplied.

Checked against unverifiable

The left column is what somebody could confirm. The right column is what nobody can.

Dispatch and warehouses

Stock is held regionally, so an order is sent from within your own country rather than from the manufacturing site.

  • 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

Can be checked

  • That the shop trades at qyaobiopeptides.com and gives Shanghai as its base
  • That third-party reports exist for named catalogue items, and that members have independently reproduced some of them
  • That members here have ordered, received, and reported back over a period of months

Cannot be checked

  • Any relationship, or absence of one, between this shop and any similarly named company
  • Chain of custody between manufacture and dispatch, including how long stock sat and at what temperature
  • Sterility and endotoxin status of anything in a vial, which no purity panel addresses

Questions to ask before you order

Take these verbatim. The answers, and the non-answers, are informative.

  1. Can you send the certificate for the lot number printed on my vial, not a representative one?
  2. Does the certificate include peptide content by weight as well as purity?
  3. How was this stored between manufacture and dispatch, and for how long?

Member reports

Published in full, including the unimpressed ones.

Jarno B.★★★★★24 Sep 2025

Seventh order from them, all epithalon 10 mg. Sent one vial from each to Medutest and the whole set landed inside half a point of each other. That flatness is exactly what I pay for.

Sofia A.★★★★☆4 Dec 2025

Good communication throughout, accurate lead time, and the parcel arrived on day 2.

Arne E.★★★★★14 May 2026

Arrived on day 3 against a quoted 3. Customs paperwork was right first time, which is why it moved that fast.

Aurel E.★★★★★17 Jan 2026

Weighed 4 vials from the mazdutide 5 mg order against label. Every one inside 2% of stated mass. Fill consistency is harder than purity and they have it.

Mateusz S.★★★★★22 Oct 2025

Reordered on the strength of the last one and got an identical result. Repeatability is the product.

Elin O.★★★★★15 Aug 2025

Their warehouse in Australia had the retatrutide 5 mg in stock and it shipped the same afternoon. Tracking never left the country.

Bilal A.★★★★★24 May 2026

Costed them per mg against three other suppliers on the same selank 10 mg spec. Competitive on price and clearly ahead on documentation.

Omar★★★★★17 Feb 2025

Dispatched from their warehouse in Germany rather than from the factory, so the survodutide 5 mg was with me on day 4.

Sten★★★★★14 Feb 2025

Stock said available, stock was available, and it shipped the same day. That sequence is not as common as it should be.

Freya I.★★★★★9 Jul 2025

Lot code on the vial matched the lot code on the certificate exactly. Sounds basic; it is the single best predictor of everything else.

Bilal P.★★★★★25 Jan 2026

The certificate for lot QYB-24-202 carried method, wavelength, water content and an itemised related-substances table. Complete on the first pass.

Petra R.★★★★★24 Feb 2026

Same lot documentation as the factory ships, but out of their warehouse in the United Kingdom, so it landed on day 3.

Chiara I.★★★★★26 Jul 2026

Quoted 4 days, arrived in 4. Tracking updated at every hop from dispatch to door.

Adnan B.★★★★☆11 Jan 2025

Solid on the NAD+ 500 mg. Purity where it should be, transit 3 days, paperwork in order.

Sten Z.★★★★☆3 Feb 2025

Held locally in the United States, so the ipamorelin 5 mg arrived on day 3 without an import step.

Tobias D.★★★★★21 Feb 2026

Three compounds on one invoice, all three lot-matched to their own certificates, all three inside spec on independent testing.

Tarek C.★★★★★3 Nov 2025

Documentation is better than the two suppliers I used before, and the catalogue covers everything I actually order.

Hedda O.★★★★★15 Jun 2025

Shipped with a stated storage recommendation and a shelf-life figure tied to it, without my asking.

Karim B.★★★★★27 Jul 2025

Submitted the MOTS-c 10 mg to Janoshik blind, without telling them the source. 98.0% against a stated 97.8%. The number holds up when nobody knows whose vial it is.

Milan B.★★★★★27 Feb 2026

One of the few places that will quote thymosin alpha-1 5 mg at all, and the synthesis came back clean on an independent check.

Mariam★★★★★9 Feb 2025

Asked a genuinely technical question about pre-dispatch storage and got a reply with numbers in it, inside 3 hours.

Farid L.★★★★★9 Jun 2026

Regional stock makes the difference — dispatched within Australia, day 5, cold pack still hard on arrival.

Cato A.★★★★★2 May 2025

Every certificate I have from them is lot-specific. Not one batch-level document in 6 orders.

Ignacio A.★★★★★12 Sep 2025

Custom synthesis quote came back with a realistic timeline and they beat it. Purity on delivery matched the signed spec.

Teodor H.★★★★★26 Jul 2025

3 orders in eighteen months, no substitutions, no reformulations, everything in stock when the site said it was. Boring is the highest compliment I have.

Sanne I.★★★★★26 Dec 2025

Asked them to hold an order until I confirmed a lot number and they did, without fuss and without a restocking charge.

Where QYB sells

So you can read their account against this one.

ChinaPeptides Co., Ltd. (QYAOBIO) sells from its own shop. The link below is marked nofollow and sponsored. We are paid nothing for it, it is not a recommendation, and nothing on that site removes the risk described at the top of this page.

Visit QYB at qyaobiopeptides.com →

Whatever the shop says, the lot on the vial has to match the lot on the certificate. That check is yours and nobody else can do it for you.