More than 4 million new MRO, office supply, medical education and safety products have been added for online purchase using cooperative contracts FRANKLIN, Tenn., June 20, 2024 /PRNewswire/ -- OMNIA Partners, the country's largest public and private group purchasing organization, today announced a major expansion of OPUS – the company's free e-commerce platform that provides public sector and nonprofit agencies access to industry-leading pricing and contract terms across hundreds of suppliers. OPUS users ca ...