We Are the Factory

Most companies selling research peptides online are resellers. They buy finished vials from a manufacturer, apply their own label, and mark up the price. Some do it carefully. Many have never seen the facility their product came from.

Liyu Peptides is different in one specific way: we are the manufacturer. We are the global supply channel for Liyu Daily Peptide Factory (Liyu Co., Ltd), based in Zhengzhou, China, an operation that has been synthesising peptides for over 30 years and supplies brands whose names you may recognise. Liyu Co. manufactures and supplies within China; Liyu Peptides, based in Hong Kong, exists to serve global peptide demand with the same material, direct from the source, without the layer in between.

How Liyu Peptides and Liyu Daily Relate

We want to be plain about this, because you will see it yourself on the certificates. Liyu Daily Peptide Factory (Liyu Co., Ltd) is the manufacturer – the facility in Zhengzhou, China that has been producing peptides for more than three decades and supplying other brands. Liyu Peptides, based in Hong Kong, is its dedicated global sales channel: Liyu Co. handles manufacturing and the domestic Chinese market from Zhengzhou, and we handle everyone else from Hong Kong.

A reseller’s COA names a manufacturer they have no connection to. Ours names the factory we are part of. We would rather explain that openly than have you wonder why the two names differ.

Where We Are

Manufacturing is in Zhengzhou, China; Liyu Peptides operates from Hong Kong. We say both plainly because the alternative – obscuring the factory behind a Western-sounding brand and a vague “global network” – is what the least trustworthy operators in this sector do. Manufacturing location tells you very little about quality. Independent verification tells you a great deal, which is why we spend our credibility budget there instead.

Who Tests Our Material

Janoshik Analytical, based in Prague, Czech Republic. They have no commercial relationship with us beyond being paid to run the analysis, they are in a different jurisdiction, and their report IDs can be checked against their own records. We chose an independent European laboratory precisely because a manufacturer self-certifying its own purity would be worth nothing.

Where We Ship

Globally, by tracked courier, with estimated delivery in 2–14 business days after dispatch. Import rules for research chemicals vary considerably between countries and change without much notice. We ship to the address you give us; confirming that your jurisdiction permits the import is your responsibility, and we’d rather say that clearly than let you find out at customs.

What We Will Not Tell You

We will not tell you what these compounds do in humans, what to dose, or how to administer them. Not because we’re being coy – because these are research chemicals, they are not approved for human use, and a supplier offering that guidance is a supplier operating illegally. If a competitor’s site reads more helpfully on that front, consider what it means that they’re willing to write it.