MandyBio’s product pages list USDT, BTC, USDC, and ETH as payment terms, with no card checkout shown.

Hangzhou Mandy Biotechnology Co., Ltd. sells peptides through mandybio.com and directs buyers to chat contacts.

Where it trips our checks

• Irreversible payment: product listings name crypto only. A seller requiring an irreversible payment route is a pattern we see repeatedly in bad actors.
• Purchase protection: the site promises refunds, but no independently verifiable dispute route was found.
• Contact transparency: the site names a China-based company but lists WhatsApp, Telegram, Discord, and Gmail contacts instead of a public street address.
• COA traceability: product-named COA images are published, but no buyer order or offered vial can be tied to a listed batch.

Sources

• MandyBio product listings and its contact page.
• The seller’s COA gallery.
• A logged-in Reddit sweep of Mandy Peptides and mandybio found only sourcing questions, not a first-hand order report. glp1forum search could not be completed because its search control failed.

Bottom line: Use caution. 4 factors trip, while independent buyer feedback and batch-linked testing remain unverified.

— maxg Founder of Ouros Lab. I write the seller research notes here.