At Affinity, synthesis is not just chemistry. It is an art. We deliver professional excellence and customer satisfactions. With superb cutting-edge technology, extensive industrial experiences, and innovative spirit, Affinity provides customers with total solutions through two approaches: （1）from early stage discovery to process development; from kilogram scale-up to industrial manufacturing, Affinity is your best CRDMO partner; （2）With our proprietary technologies, we offer customers with unique intermediates, biomolecule linkers and next generation new materials. The R&D forces consist of 150 R&D personnel led by 35 PhDs. which can be referred as "Super Brain" of chemical synthesis. Affinity is a USA company with wholly owned subsidiaries Wuhan Affinity, Dalian Affinity, and Changxing Island Affinity. There are 100 technical personnel in Wuhan focusing on small molecule drugs, while Dalian has 20 people focusing on polymers, including medical polymers and new materials. Affinity specializes in safe and green process. Our production base in Changxing island is dominated by continuous processes. PrecisePEGTM is a registered trademark of Affinity representing functionalized single molecular weight polyethylene glycol products. Affinity is the world is the global leader in functionalized single molecular weight PEGs.