Vendor Directory

REFERENCE PAGES · VERIFICATION CAN BE REVOKED AT ANY TIME

Reference pages for vendors the community tracks. A listing here is not an endorsement — read the testing history, then read Buyer Beware, then decide. Always verify COAs on your own batch.

Wuhan Wansheng Bio (WWB)

Staff-verified · long Janoshik testing history

GGPeps (GYC)

Staff-verified · community-tested batches

Qingdao Sigma Chemical (QSC)

Staff-verified · high-volume supplier

GL Biochem

Reference page · synthesis house

WWB — official Telegram

Contact verification — avoid impersonators

GGPeps — official Telegram

Contact verification — avoid impersonators

QSC — official Telegram

Contact verification — avoid impersonators

Impersonation warning: scammers clone vendor names on Telegram and Discord daily. Only trust contact details published on these reference pages, and report fakes to Buyer Beware.

How verification works

Sustained independent testing (Janoshik / PeptideMeter) across multiple batches.
Consistent community order feedback over 6+ months.
Responsive handling of quality complaints, including reships on failed tests.
Immediate review on any confirmed failure — see Buyer Beware for revocations.