We are a manufacturer with our own lab and production facility. This allows us to control quality, cost, and supply chain from the source.
How do you guarantee product quality?
We operate under strict quality management systems (e.g., GMP / ISO). Every batch is tested by HPLC, mass spectrometry, and other methods to ensure identity, purity, and impurity profile meet high standards.
Can you provide certificates or test reports?
Yes. We can provide Certificate of Analysis (COA), MSDS, HPLC profile, mass spec data, and third-party test reports upon request.
What is the maximum purity? What are the main impurities?
We offer purity levels 99%+). Main impurities are usually peptide sequences missing one or more amino acids. We provide clear HPLC chromatograms showing all peaks.
What is the MOQ?
Custom packaging is available. MOQ is 1 box=10 vials.
How can I get a sample? Is it free?
We can provide small free samples (buyer usually pays international shipping). Samples will be sent via DHL/UPS/FedEx once shipping cost is received.
What is the typical lead time for bulk orders?
For stocked products, about 3–5 working days after payment. For custom peptides, 2–4 weeks depending on sequence and process complexity.
How do u ensure stability during shipping, especially cold chain?
We use professional cold chain packaging (ice packs, insulated boxes) and monitor temperature from our warehouse to courier pickup. Lyophilized peptide powder remains stable under controlled conditions.
What are the storage conditions and shelf life?
Peptide powder should be stored at 2–8°C (refrigerated), away from light and moisture. Under recommended conditions, shelf life is typically 12 months.
Do u offer custom peptide synthesis or formulation services?
Yes. We offer custom synthesis (sequence or purity), and OEM/ODM services including finished dosage forms (capsules, gels, etc.). We can also manufacture according to your existing formula.
What payment methods do you accept?
We accept T/T, Western Union, PayPal, etc. Terms are negotiable.
What if there is a problem with the product after delivery?
If a quality issue occurs (e.g., purity not as claimed), please provide clear photos or video evidence. After verification, we will offer a solution such as replacement, refund, or other arrangement to your satisfaction.
Is the price negotiable?
Our pricing is fair and market-based. For long-term cooperation or large regular orders, we offer competitive discounts. Please provide your target quantity for the best price.
Changsha Luocheng Trading Co., Ltd. is a specialized supplier of high-purity peptides for the cosmetic, wellness, and fitness industries. Our core products include cosmetic peptides, anti-aging peptides, weight management peptides, and muscle-building peptides – serving skincare brands, supplement formulators, and health-focused companies worldwide.
