DNV GL Certified In 2011, illy became the world’s first company to earn the Responsible Supply Chain Process certification from DNV (Det Norske Veritias), one of the world’s foremost, independent industrial process arbiters. The certification attests to the sustainable practices of illy’s supply chain, and in particular, to the quality of illy’s relationships with its suppliers. DNV established an innovative certification model, based in part on illy’s practices, assigning critical roles to quality improvement and value creation.