Consistency
Same specification, same method, same result. Batch-to-batch variation is measured and documented, not explained away.
About Eastling
A biotech supplier built on repeatable results.
We are a Xi'an-based team working across peptide chemistry and fermentation. Our job is to make the second batch look exactly like the first — and to prove it on paper.
Analytical suite · Xi'an
Our story
We build the batch.
Then we prove it.
Eastling Biotech started from a narrow idea: a chemical supplier should be judged on what happens after the purchase order — the assay that matches the certificate, the second batch that matches the first, the email that is answered in the same week.
From Xi'an, we work with fermentation and peptide production partners and own the part that matters most to our customers: specification, analytics, packaging and export. One team, one file, one standard — for a 100 g sample or a 25 kg drum.
“Our product is not the powder in the vial. It is the confidence that the next vial will be the same.”
Eastling Biotech · Quality policy
That confidence is built from unglamorous things: written specifications, calibrated instruments, retained samples, and a release decision that someone signs their name to.
It is also why we publish our documentation standards openly. If a document is missing from your file, you should know before you order — not after your customer asks.
What we stand for
Three habits,
held consistently.
They sound obvious. In this industry they are not. They are the reason customers consolidate their peptide and actives orders with us.
Transparency
Real lead times, real availability, real analytical data. If something is outside spec, you hear it from us first.
Partnership
One named specialist per account, from first sample to repeat production. No rotating ticket numbers.
Inside the process
How a batch
is made.
Four controlled stages, each with its own analytical checkpoint. This is the sequence behind every catalog item and every custom project we release.
Fermentation
Defined media, controlled temperature and pH. Fermentation routes replace chemical synthesis where they give a cleaner profile.
Isolation & purification
Filtration, chromatography and recrystallisation, selected per molecule to reach the target assay without degrading the product.
Lyophilization & milling
Controlled drying and particle sizing for a stable, free-flowing powder that behaves the same way in your process.
Release testing
HPLC assay, identity confirmation, water content, heavy metals and microbiology — reviewed before the lot is released.
Capabilities
Small enough to care.
Equipped to deliver.
We keep the scope focused: peptides, fermentation-derived actives, and the documentation around them. That focus is why we can answer technical questions without forwarding them to a third party.
- Thirteen catalog peptides and custom peptide synthesis
- Fermentation-derived dietary supplement actives
- HPLC, LC–MS and microbiological release testing
- OEM filling, private label and custom packaging
- Export documentation, MSDS and pre-shipment samples
- Third-party verification with buyer-nominated laboratories
43Catalog products
24hQuote response
6Continents served
Batch released only on specification
Production and QC · Shaanxi
Work with us
Start with a specification.
Send us the product, the purity you need and the market you serve. We will come back with a plan — not a brochure.