When sourcing coconut milk in bulk, the fat content is the primary quality indicator, typically ranging from 5% (light) to 22% (extra rich). Buyers should request a detailed specification sheet to verify the percentage of coconut extract versus water. Ensure the product is free from unauthorized bleaching agents and check for the type of stabilizers used, such as Guar Gum or Xanthan Gum, which prevent separation. For premium markets, prioritize Cold-Pressed or UHT (Ultra-High Temperature) processed milk to ensure better flavor retention and a longer shelf life without excessive preservatives.