Yisheng Biopharma Co., Ltd., a biopharmaceutical company, researches, develops, manufactures, and markets immuno-oncology products and vaccines. It offers YS-ON-001, an investigational biological product that demonstrates immuno-modulating effects, such as induction of anti-tumor cytokines, activation of NK cells, regulation of macrophage polarization, and suppression of regulatory T cells for the treatment of advanced solid tumors. Yisheng Biopharma Co., Ltd. was founded in 2002 and is based in Beijing with operations in China, the United States, Cambodia, and Singapore.