Figure 3
The hierarchical diagram begins with the heading “Sustainable Supplier Selection”. Three downward arrows from “Sustainable Supplier Selection” point downward to the three main categories, arranged horizontally from left to right: “Economics”, “Social”, and “Environmental”. Each category branches downward into multiple sub criteria. Under “Economics”, Seven downward arrows are connected to seven horizontally aligned boxes, which are listed from left to right as “Quality”, “Delivery”, “Cost”, “Technology or equipment”, “Organization and management”, “Service”, and “Financial status”. Under “Social”, Six downward arrows are connected to six horizontally aligned boxes, which are listed from left to right as “Work safety and labor health”, “Information disclosure”, “Corporate social responsibility”, “Culture”, “Employment practices”, and “Relationship building”. Under “Environmental”, Five downward arrows are connected to five horizontally aligned boxes, which are listed from left to right as “Environmental competencies”, “Recycling”, “Green products”, “Environmental management system”, and “Pollution control”.Hierarchical model of SSSC for the biomass energy supply. Source: Created by author