Certification & LabelsLignum Certified USDA Biopreferred by Axel BarrettApril 20, 2021April 20, 2021 Lignum was accredited with the USDA Certified Biobased Product Label in the category intermediates plastic resins Subscribe Now! This content is only available to paid subscribers. Buy a subscription today. More Info buy Log in Share this:TweetLike this:Like Loading... Related