Quantai Co., Ltd. is a Guangzhou-based peptide manufacturer founded in 2003, serving global B2B partners with custom peptides, research peptides, cosmetic peptides, and pharma/API-grade peptide solutions.
With a team of more than 350 professionals and over 70% R&D and scientific staff, Quantai supports distributors, research institutions and professional buyers across 32 countries and regions.
Our Featured Products

- API Peptides
- Cosmetic Peptides
- Catalog Peptides
- Functional Peptides
- Cell Penetrating Peptides
- Cyclic Peptides
Our Featured Services

- Peptide Synthesis Services
- Peptide Conjugation
- Peptide Modification
- Peptide Analysis
- GMP Manufacturing
- Peptide CDMO
Advantages of Choosing Quantai
Expertise and experience
Built for practical peptide research, development and manufacturing support with responsive technical communication.
Cutting-edge technology
Built for practical peptide research, development and manufacturing support with responsive technical communication.
Integrated services
Built for practical peptide research, development and manufacturing support with responsive technical communication.
Customized and flexible
Built for practical peptide research, development and manufacturing support with responsive technical communication.
Compliance
Built for practical peptide research, development and manufacturing support with responsive technical communication.
Customer support
Built for practical peptide research, development and manufacturing support with responsive technical communication.