NKMAX CO., Ltd. manufactures and sells biological products in South Korea. The company offers anti-cancer immunotherapy treatment that activates the immune cells in body to kill the cancer cells; natural killer cell activity test for cancer patients; NK VUE Kit, an NK cell activity test that measures IFN-gamma released from activated NK cells with small amount of blood; and NK365, a proprietary blend of vitamins, minerals, and agaricus mushroom extract for immune system. It also provides recombinant proteins and monoclonal antibodies; and NK PUPPY, a test that measures dog's immunity. The company was formerly known as ATGen Co and changed name to NKMAX CO., Ltd. in 2019. The company was founded in 2002 and is headquartered in Seongnam-si, South Korea.