4flow – We are over 600 team members across 16 global locations. What started in Berlin, Germany in the year 2000 – with a team of just five people – has grown into an industry leader in supply chain optimization with offices on four continents. Our business line 4flow management utilizes innovative concepts in transportation and network management to continuously plan, optimize, and manage supply chain networks as a neutral 4PL. Our business line 4flow management utilizes innovative concepts in transportation and network management to continuously plan, optimize, and manage supply chain networks as a neutral 4PL.