Identifying sustainable suppliers involves thorough research and due diligence. Here are some key steps: 1. Look for certifications such as Fair Trade, FSC (Forest Stewardship Council), and GOTS (Global Organic Textile Standard). 2. Evaluate the supplier’s sustainability reports and environmental policies. 3. Conduct on-site audits to verify compliance with sustainability standards. 4. Use third-party rating agencies to assess the supplier’s sustainability performance.