Hongzi Peptide is a bulk wholesaler of peptides based in China. Direct manufacturer. Key products include Tirz Peptide, Retatrutide.
Listing reviewed August 2026.
Yiwu County, Zhejiang manufacturer. Specializes in cosmetic/beauty peptides for skincare - NOT a pharmaceutical CDMO.
Hongzi Peptide is listed as a bulk wholesaler in the peptide supply chain, serving Asia markets from China. As a direct manufacturer, this supplier controls its own production process from synthesis through purification and quality control release testing. Verification is based on publicly available information and cross-referenced against industry databases. This supplier has a moderate confidence score — buyers should perform additional due diligence before engaging.