Figure 1: Four main elements of a green business ........................................................................................ 19 Figure 2: Proposed steps to start a green business....................................................................................... 24 Figure 3: Steps to green an existing business................................................................................................ 28 Figure 4: Cradle to grave and cradle to cradle approaches........................................................................... 33 Figure 5: Stages in a Life Cycle Assessment................................................................................................................................................................................................................................................... 34图6：有机购物袋生产的价值链......................................................................................................................................................................................................................................................................................................................................................................................................................... 36 Figure 8: Example of a process flow diagram................................................................................................ 36 Figure 9: Twelve RECP steps.......................................................................................................................... 44 Figure 10: Proposed indicators to measure and monitor the business' performance towards reducing resource use and pollution............................................................................................................................ 48 Figure 11: Process of continual improvement on EMS........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 55 Figure 12: System and Product Certification................................................................................................. 56 Figure 13: Example of an assessment process template............................................................................... 59 Figure 14: Creating partnerships................................................................................................................................................................................................................................................................................................................................................................................................................................................ 60图15：循环经济的关键概念。.............................................................................................. 63 Figure 165: Sustainable Development Goals (https://sdgs.un.org/goals).