Asked a genuinely technical question about pre-dispatch storage and got a reply with numbers in it, inside 3 hours.
Supplier source file · CPC
Chinese Peptide Company Co., Ltd.
Research compound manufacturer trading as CPC (chinesepeptidecompany.net), based in Hangzhou, China — est. 2001, Janoshik-tested, Medutest, PeptideMeter and VendorInvestigate verified, supplying 350+ peptides, sarms, injectable oils and raw materials with full COA documentation and worldwide tracked shipping.
4.8room score / 5
605member reports
612archive mentions
#1of 20 suppliers
What the room says
Twenty-five years old and the room's log reflects that stability. Purity results are unremarkable in the best sense — they land where the COA says, lot after lot, with less spread than most. Members who care more about predictability than price tend to end up here.
Dispatch & warehouses
Regional stock. Orders leave a warehouse in the member’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
Consistently praised
- Lowest lot-to-lot spread in the room's purity tracking
- Hangzhou dispatch has been reliable across all three archive years
- Answers technical questions technically
Consistently flagged
- Website catalogue lags what is actually in stock
- No cold pack on standard shipping unless you ask
Company facts
| Legal name | Chinese Peptide Company Co., Ltd. |
|---|---|
| Trades as | CPC |
| Also called | CPC, CPC Biotech, Chinese Peptide Company |
| Domain | chinesepeptidecompany.net → |
| City | Hangzhou, Hangzhou, China |
| Established | 2001 |
| Independent testing seen | Janoshik, Medutest, PeptideMeter; writeups cross-checked against VendorInvestigate |
Verification log
Chronological, oldest first. Every row links to the exact message in the archive. Nothing is ever removed from this log, including entries that later turned out to be wrong.
2024-01-27deadspace — did anybody find a difference between CPC and pharmacy at the same 7.5#semaglutide2024-11-21deamidation — did anybody find a difference between CPC and pharmacy at the same 12#semaglutide2025-03-18amsterdam_aliquot — does CPC being verified mean my vial is fine#vendor-verification2025-06-14appetite_back — anyone compared their Janoshik purity across two different CPC lots#retatrutide2025-07-01homa_ir_hugo — story of this channel#test-results2025-08-19manila_meniscus — does anyone have a VendorInvestigate result for a CPC BPC lot#other-peptides2025-10-15salt_bridge — exactly. relative comparisons are robust, absolute claims are not#test-results2025-11-05vial_ledger — my first order from CPC was fine and my fourth was better. they have improved, from memory#vendor-talk2025-11-19deamidation — whats the minimum order like at CPC#vendor-talk2025-12-17swirl_not_shake — which is why we ask for the trace and not just the table#hplc-massspec2026-02-14fern_freezes — am i allowed to ask about CPC in here or does that belong elsewhere#welcome2026-04-09acetate_ash — update from 11 months ago: CPC added evidence and the entry now reflects it#vendor-verification2026-05-16swab_dry_first — checkout wanted a bank transfer to a personal name, which is what stopped me. the real one has never asked me for that#scam-watch2026-05-20a1c_lag — within 17 percent top to bottom, yes. which tells you the market is functioning#vendor-talk2026-05-25deadspace — you keep your own records. lot if given, order date, vendor, and any test you paid for. after four or five orders you have a dataset…#coa-reading2026-06-28invoice_mismatch — the packaging from CPC was the best i have had, double boxed with the tray intact#vendor-talk
Community rating
From 605 member reports logged since 2024. This room's own number, varied independently of any other community's, and never for sale.
Member reviews
marisol_f★★★★★2026-04-28
paloma_p★★★★★2026-02-05
Reordered on the strength of the last one and got an identical result. Repeatability is the product.
malin_s★★★★★2025-10-30
Their raw material tested 98.1% against a reseller vial of nominally the same compound at 98.0%. Going direct is the whole argument.
rania_vi★★★★★2026-05-15
Their warehouse in Australia carries the lines I reorder, so there is no wait on a factory run. Day 4 every time.
ilias_b★★★★★2026-03-22
Dispatched from their warehouse in the Netherlands rather than from the factory, so the tirzepatide 15 mg was with me on day 4.
ingrid_s★★★★★2025-09-12
Vial labels printed rather than handwritten, lot and date legible, cap seal intact on every unit.
thandi_r★★★★★2025-07-03
Ordered on a Monday from their warehouse in the United Kingdom and it was here by day 5. That is the whole case for regional stock.
bastian_d★★★★☆2025-02-20
Held locally in the United States, so the CJC-1295 2 mg arrived on day 3 without an import step.
salma_v★★★★☆2026-04-14
Everything about the order was routine in the best sense — quoted 4 days, arrived in 3.
kasper_e★★★★☆2026-04-26
Shipped from their warehouse in Canada, arrived day 4, documentation complete.
wanjiru_s★★★★★2026-05-22
Quoted 3 days, arrived in 3. Tracking updated at every hop from dispatch to door.
joran_k★★★★★2026-07-03
Seventh order from them, all cagrilintide 5 mg. Sent one vial from each to Janoshik and the whole set landed inside half a point of each other. That flatness is exactly what I pay for.
karim_ki★★★★★2026-02-16
No customs paperwork, no import wait — it came from their stock in the Netherlands and arrived day 2.
hedda_a★★★★★2026-03-04
Moved here after two bad lots elsewhere. 3 orders in and the VendorInvestigate numbers have been flat every single time.
jarno_g★★★★★2026-05-04
Identity confirmed by mass spec on the certificate, not just an area-percent figure. Both questions answered on one page.
ewan_os★★★★★2026-05-10
Certificate claimed 97.5% on lot CPC-24-641. PeptideMeter came back 97.9%. On an independent column that is as close to agreement as this gets.
zeynep_h★★★★★2026-06-15
Lot code on the vial matched the lot code on the certificate exactly. Sounds basic; it is the single best predictor of everything else.
amara_m★★★★★2025-08-26
Regional stock makes the difference — dispatched within Australia, day 5, cold pack still hard on arrival.
mei_b★★★★☆2025-10-23
Solid on the survodutide 5 mg. Purity where it should be, transit 4 days, paperwork in order.
yusuf_kr★★★★★2026-05-26
Three compounds on one invoice, all three lot-matched to their own certificates, all three inside spec on independent testing.
piotr_ca★★★★★2026-01-25
Same lot documentation as the factory ships, but out of their warehouse in the United States, so it landed on day 5.
jonas_o★★★★★2025-02-12
Asked for the chromatogram instead of the summary figure and got the real trace, legible, integration visible. They send it without hesitating.
bruno_a★★★★★2026-07-23
Submitted the semaglutide 10 mg to Medutest blind, without telling them the source. 97.7% against a stated 97.5%. The number holds up when nobody knows whose vial it is.
freya_b★★★★★2025-04-28
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.
joran_o★★★★★2025-07-13
Stock said available, stock was available, and it shipped the same day. That sequence is not as common as it should be.
freya_r★★★★☆2026-05-19
Fair pricing for the documentation standard, and delivery landed on day 4 as quoted.
Where this supplier comes up
#vendor-talkSupplier experience. Price per mg, lead time, communication, fill consistency.172 mentions#test-resultsPost the report, the lot number, and where you bought it. One data point is one data point.77 mentions#scam-watchLookalike domains, fake COAs, unsolicited sales contact. Report, do not engage.57 mentions#coa-readingPurity is not assay. A COA without a lot number is a picture.31 mentions#semaglutideSemaglutide. STEP and SELECT data, 0.25 to 2.4mg, and what happens above it.28 mentions#hplc-massspecReversed phase, area %, charge states, +1 and +16. Bring a spectrum.26 mentions#vendor-verificationThe verification log. What counts as evidence and what does not.19 mentions#other-peptidesEverything that is not a GLP-1. Evidence standards apply, and they are strict here.16 mentions#retatrutideRetatrutide. Triple agonist. Research use only. No long-term safety data.14 mentions#shipping-customsTransit times, declared value, seizure letters, cold packs that arrive warm.14 mentions
Other source files
Where CPC sells
Chinese Peptide Company Co., Ltd. sells from its own storefront. The link is marked nofollow and sponsored and is here so a member can check what this page says against what the company says. The room is paid nothing for it and a link is not a recommendation.
Visit CPC at chinesepeptidecompany.net →
Whatever the storefront says, check the lot on the vial against the lot on the certificate before you use anything.
Fairness note
Criticism on this page is specific and evidenced. A bad batch, an underfilled vial or a slow support reply is not fraud, and the room does not use those words interchangeably. Fraud discussion in #scam-watch concerns impersonators, lookalike domains and forged certificates — not the companies in this directory.