Proteintech is a leading manufacturer of life science reagents with the largest proprietary portfolio of self-manufactured antibodies. With over 100,000, Proteintech offers antibodies and immunoassays across research areas. In addition, Proteintech produces cytokines, growth factors and other proteins that are human expressed, bioactive and cGMP-grade. ChromoTek is part of Proteintech and is a pioneer in the development and commercialization of innovative reagents based on camelid Nanobodies.