Denka Releases Video Showcasing Company Efforts to Supply Ingredients for Antiviral Drug Avigan on February 8, 2021 in Products Denka Co. Ltd. (TYO:4061) has released an approximately eight-minute video documenting its project to supply diethyl malonate for use in…... Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here Continue Reading