DHQ Co., Ltd. is a Japanese company established in 2008, specializing in the import and sale of taxifolin (a natural flavonoid derived from Siberian larch). The company has secured an exclusive distribution agreement with the Russian-based AMETIS, the world's largest producer of taxifolin. DHQ promotes taxifolin-based products for various health benefits, including cognitive health and antioxidant properties, and has developed several supplements containing taxifolin.