Affinity Biosciences is a Chinese vendor of antibodies. Its specialty are phosphospecific antibodies, of which Affinity Biosciences offers almost 2,000 varieties. Affinity Biosciences has also some other antibodies which are difficult or even impossible to find elsewhere.

The list of Affinity Biosciences' OEM partners includes some quite famous global vendors. The company also offers contract services for custom antibodies (including phospho-specific),  peptides and synthetic small molecules.