CPC
Chinese Peptide Company Co., Ltd.
Hangzhou, Hangzhou · China · est. 2001 · source page added 7 Oct 2023
Hangzhou, est. 2001, and one of the few vendors whose claimed history survives a check against the company registry. Reads more like a contract synthesis house that also sells small quantities than a shop pretending to be a factory. Answers method questions in technical terms, not marketing ones.
- Legal name
- Chinese Peptide Company Co., Ltd.
- Short code
- CPC
- Also known as
- CPC, CPC Biotech, Chinese Peptide Company
- Shop domain
- chinesepeptidecompany.net →
- City
- Hangzhou, Hangzhou
- Established
- 2001
- Community rating
- 96%
- Independent tests logged
- 5
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
- Establishment date and legal entity both check out
- Consistent 98%+ across four different compounds
- Will answer method questions in technical terms rather than marketing ones
- Lead times stretch around Chinese New Year every single year. Plan for it
- Packaging is functional rather than impressive — fine for powder, marginal in summer.
| Date | Service | Compound | Batch | Claimed | Result |
|---|---|---|---|---|---|
| 2026-06-04 | Medutest | Tirzepatide 10mg | CPC-2606 | 98.5% | 98.6% |
| 2026-01-19 | Janoshik | Semaglutide 5mg | CPC-2601 | 99.0% | 98.3% |
| 2025-08-27 | PeptideMeter | BPC-157 5mg | CPC-2508 | 98.0% | 98.5% |
| 2025-03-11 | Janoshik | Retatrutide 5mg | CPC-2503 | 98.0% | 97.9% |
| 2024-09-05 | VendorInvestigate | Semaglutide 10mg | CPC-2409 | 99.0% | 98.8% |
| From | To | Carrier | Days |
|---|---|---|---|
| Hangzhou | Ireland | DHL | 9–11 |
| Hangzhou | US East | EMS | 9–14 |
- 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
- 8[Vendor] CPC — 2001 establishment date checks out against the company registryc/vendorvetting · 1.8k points · 36 comments
- 9[Failure] gel pack arrived liquid and warm in July. photos at unboxing.c/coldchain · 1.2k points · 44 comments
- 10is 96.8% area% actually fine or am i being sold a rounding errorc/coa · 345 points · 20 comments
One of the few places that will quote KPV 10 mg at all, and the synthesis came back clean on an independent check.
Arrived on day 5 against a quoted 5. Customs paperwork was right first time, which is why it moved that fast.
Sixth order from them, all semax 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.
Every certificate I have from them is lot-specific. Not one batch-level document in 8 orders.
7 lots logged now, purity 98.7 to 99.0%. A band that tight is worth more to me than one spectacular number.
Documentation is complete and the numbers are steady. A dependable choice for routine work.
Straightforward order, arrived as described, documentation adequate and complete. Nothing to add, which is the point.
Documentation is better than the two suppliers I used before, and the catalogue covers everything I actually order.
No customs paperwork, no import wait — it came from their stock in the Netherlands and arrived day 4.
Peptide content reported at 98.8% alongside the purity figure, so I could convert straight to a working mass.
Lot code on the vial matched the lot code on the certificate exactly. Sounds basic; it is the single best predictor of everything else.
Vials wrapped individually, foam cut to fit, nothing loose in the box. Packing that has clearly been thought about.
Stock said available, stock was available, and it shipped the same day. That sequence is not as common as it should be.
Queried the related-substances total on lot CPC-24-918; they came back with method, column and detection limit. That depth is rare.
Shipped from their warehouse in Australia, arrived day 2, documentation complete.
Asked them to hold an order until I confirmed a lot number and they did, without fuss and without a restocking charge.
Certificate claimed 98.8% on lot CPC-26-564. VendorInvestigate came back 99.3%. On an independent column that is as close to agreement as this gets.
Their raw material tested 98.8% against a reseller vial of nominally the same compound at 98.3%. Going direct is the whole argument.
Ordered on a Monday from their warehouse in Australia and it was here by day 4. That is the whole case for regional stock.
Regional stock makes the difference — dispatched within the Netherlands, day 2, cold pack still hard on arrival.
Solid on the tirzepatide 10 mg. Purity where it should be, transit 3 days, paperwork in order.
First order, deliberately small, PT-141 10 mg only. Documentation, transit and a Medutest result at 97.8% all checked out, so the next one will not be small.
Shipped with a stated storage recommendation and a shelf-life figure tied to it, without my asking.
Held locally in Australia, so the ipamorelin 5 mg arrived on day 5 without an import step.
The certificate for lot CPC-25-396 carried method, wavelength, water content and an itemised related-substances table. Complete on the first pass.
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.