Superior Quality
Our peptides and proteins achieve over 99.5% purity with strict quality control.
Production Technology
Utilizing advanced Solid-Phase Peptide,Liquid-Phase Peptide and Continuous Flow Synthesis technologies
Production & Supply Capacity
As a source manufacturer, we provide integrated logistics and supply chain tracking for efficient delivery.
Customer Feedback
Featuring authentic client reviews and satisfaction records, we are committed to delivering the best products and services.
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About YanSen
Yansen is a leading peptide raw material manufacturer based in China. Guided by the philosophy of “Scientific Synthesis, Precise Empowerment,” we provide pharmaceutical-grade and nutraceutical-grade peptide raw material solutions to customers worldwide.
Advanced Facilities & Production Capabilities
Yansen’s manufacturing base includes a Class 10,000 clean production workshop equipped with an internationally advanced cluster of instruments.
This allows us to achieve end-to-end capabilities — from peptide sequence design to large-scale production.
With an annual production capacity of 800 kilograms, we have optimized our processes to deliver standard orders within 8–15 working days.
We also support custom peptide sequence development, ideal for applications in dietary supplements and skin repair.
Cutting-Edge Technology & Innovation
Yansen’s R&D team specializes in Solid-Phase Peptide Synthesis (SPPS) and High-Performance Liquid Chromatography (HPLC) purification technologies.
To date, we hold 8 invention patents for peptide modification.
We can flexibly produce batches ranging from milligrams to kilograms, maintaining consistent product purity between 99% and 99.5%.
All products undergo LC-MS detection and microbial limit testing, meeting the bioactive peptide quality standards published in The Lancet.
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BLOG
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FAQ
How long does it take to process and ship my
·Standard peptides: SWe will send out the goods within three days after receiving your payment, and the estimated delivery time is 7-25 days.
·Custom peptides: Depending on complexity, lead time ranges from 2-4 weeks We ship worldwide using trusted carriers like DHL,FedEx, and EMS.
Where are you shipping from?
We have multiple cargo warehouses worldwide, with the largest ones located in Hong Kong and the United States. We will select the optimal solution to deliver the packages.
Do you ship internationally?
Yes, we ship to over 35 countries and regions worldwide and provide full order tracking.lf you have special shipping requirements, please let us know in advance.
What is the typical purity of your peptides?
Our peptides are typically ≥99% pure, and we provide detailed COA (Certificate of Analysis).
How do you reconstitute powdered peptides?
Our lyophilized peptides require reconstitution before they’re viable for research use. This involves adding a liquid(Bac Water,Saline, Distilled Water…).
Any amount of liquid can be used. If you add1ml (1ml equals100 units) every10 units will contain 1mg of peptide.
Once reconstituted peptides should be stored refrigerated.
How is the product packaged to ensure stability?
Our peptides are lyophilized(freeze-dried) and sealed in sterile vials.
Products are shipped with appropriate insulation and temperature control based on destination and climate.
Why do your products say: "Research Use Only"?
In the United States, only licensed pharmacies can compound peptides and resell them for human use.
Peptides in powder form can still be sold, however, they must be marked”Research Use Only,” for legal and liability reasons.
PLEASE be aware that self administering”research” peptides could be dangerous! There’s a reason certain compounds are available ONLY under the careful supervision of a doctor. We do not want to see anyone harmed by misusing our products.
Furthermore, we cannot provide medical advice of any kind. Please be safe.
What payment methods do you accept?
We support multiple secure payment methods, including:
·Bitcoin
·USDT
·PayPal
·Bank Transfer(T/T)
·USDC
·Alibaba
·Wise
We provide a variety of payment methods toserve customers in a convenient way
What if I need technical support after purchasing?
Our technical and sales support team are always here to answer any questions you may have before or after your purchase. Please contact us via WhatsApp or email or form, we will usually respond within12 hours.
What types of peptides do you manufacture?
We specialize in a variety of high- purity peptides, including custom peptides, research-grade peptides, cosmetic peptides, and peptide lyophilized powders and raw materials for pharmaceutical applications.