ASTech Co., Ltd. engages in the manufacture of organic ultraviolet (UV) filters for active pharmaceutical ingredients (API). Its products include Uvimax Diethylamino hydroxylbenzoyl hexyl benzoate (DHHB), Uvimax Ethylhexyl triazone (EHT), Uvimax Terephthalylidene dicamphor sulfonic acid (TDSA), and Uvimax Bemotrizinol (BEMT). The company was founded on March 15, 2005 and is headquartered in Seocheon-gun, South Korea.