Supply chain management is the single biggest opportunity for suppliers to reduce costs, Original Equipment Suppliers Association (OESA) managing director Neil De Koker told a meeting of the Automotive Public Relations Council (APRC) in Troy, Michigan, yesterday. While he noted that e-business can be an important tool to manage supply chains more effectively, he added: "All of us in the industry have room for improvement - to be more lean or implement other programmes that will help us become more efficient... we must find a way to take costs out through collaborative efforts between automakers and parts manufacturers."