Puyi is a technology-driven chemical company. We offer APIs and intermediates, as well as nutritional supplement with effective technical support and professional documentation service. 

• Trader? We are provider of technology solution and manufacturing service, not trader. We own the intellectual property for all of products we sell. 
• Manufacturer? We are supplier of product, not manufacturer. We have market exclusive for most of products we license.

API
■ Oncology 
■ Vitamin D derivatives 
■ High-Potency API

Intermediate
■ Chiral Compound
■ Unavailable Commercially Currently 
■ Advanced Intermediates

Amino acid
■Unnatural Amino Acid
■Amino Acid Derivatives