AdvanSix Inc. (ASIX) has announced that three of its manufacturing sites, located in Frankford, PA, Hopewell, VA, and Chesterfield, VA, have been certified to the International Sustainability and Carbon Certification (ISCC) PLUS standard. ISCC PLUS is a worldwide recognized voluntary certification scheme for creating sustainable supply chains. The ISCC PLUS accreditation, which is verified by an in-depth audit, recognizes the adoption of clear, transparent and traceable processes, particularly for organizat ...