Lyophilized peptides should be stored at -20°C or -80°C for long-term preservation. Reconstituted peptides should be aliquoted and stored at -20°C to avoid repeated freeze-thaw cycles. Detailed storage instructions are included with every shipment.

Please contact our sales team for payment options. We work with clients to find convenient and secure payment methods.

Yes, COA is available upon request for all products. We believe in full transparency and quality assurance.

Yes, we offer competitive factory-direct pricing for bulk orders. Please contact us for a quote based on your quantity requirements.

We reply to WhatsApp messages and emails within 24 hours on business days.

You can contact us via WhatsApp or email. Our team will guide you through the ordering process, including product selection, pricing, and shipping arrangements.

Yes, we offer door-to-door shipping to most countries worldwide. Typical delivery times range from 5 to 12 business days depending on the destination.

We guarantee ≥99% purity for all peptide products. Every batch is tested by third-party laboratories using HPLC and MS analysis. Certificates of Analysis (COA) are available upon request.

All products supplied by Jinan Xiaohangrui Trading are strictly for laboratory research and development purposes only. They are not for human consumption, clinical application, or therapeutic use.