At Affinity, chemistry is an art. We deliver professional excellence and customer satisfactions. Over 150 chemists with 35 PhDs are ready to service you:

Small Molecule Services:

With our expertise in synthesis, process development, scale-up engineering, and manufacture capability, we partner with customers to provide high quality contract services, focus on safe, green and cost-cut process.

Polymer Services:

With our profound understanding of polymer structure-property relationships and our expertise in precisely controlled polymerization, we offer customers polymers with specific requirements for MW, MWD, structure and functionality.

Products:

With our proprietary technologies, we offer our customers next generation new products. Our product lines include ADC linkers; PrecisePEG^TM; PEGylated products; Functionalized biodegradable polymers; Special building blocks; New optic-electronic materials.