Frequently Asked Questions
Welcome to the China Peptide Source FAQ page. Here you will find detailed answers regarding our high-purity research peptides, direct factory-to-USA warehouse logistics, 3rd-party COA verification, and wholesale ordering. Designed for research laboratories and bulk buyers seeking reliable global supply chains.
At chinapeptidesource.com, we bridge the gap between direct factory pricing and local convenience. By combining state-of-the-art manufacturing with our dedicated USA warehouse fulfillment, we deliver high-purity research compounds without long overseas transit delays or customs risks.
Orders fulfilled directly from our USA warehouse typically arrive within 2–4 business days via USPS or FedEx. International orders dispatched from our primary factory facility ship via fast, tracked air express and arrive in 7–12 business days.
Quality and consistency are our highest priorities. Every peptide batch undergoes rigorous High-Performance Liquid Chromatography (HPLC) and Mass Spectrometry (MS) testing by independent 3rd-party laboratories to guarantee ≥98% to 99%+ purity. Third-party Certificates of Analysis (COAs) are available for all products.
Yes. Full batch documentation and 3rd-party COAs verifying purity levels, sequence identity, and heavy metal testing are provided directly on our website or upon request for your laboratory compliance records.
We supply API-grade research peptides manufactured under strict cGMP-compliant conditions. All compounds sold by chinapeptidesource.com are intended strictly for in vitro laboratory research and development purposes.
Yes, we specialize in bulk factory orders as well as standard research quantities. We provide flexible wholesale tiers starting at 10-vial kits, along with OEM white-labeling and unlabelled vial options for specialized institutional buyers.
We provide a 100% Delivery Guarantee on eligible domestic and international orders. If an order is lost or delayed during transit, our support team will re-ship your package promptly at no extra cost to minimize research downtime.
Lyophilized (freeze-dried) peptides remain stable at room temperature during standard transit times. For heat-sensitive sequences or long-distance international shipping, we utilize insulated cold-pack packaging to maintain structural stability and bioactivity.
No. All chemical entities offered on chinapeptidesource.com are strictly for Laboratory Research Use Only (RUO). They are not intended for human consumption, clinical use, veterinary application, or diagnostic procedures.
For custom synthesis, high-volume wholesale quotes, or order tracking support, contact our team at sales@chinapeptidesource.com or reach out via our live contact page.