Darling Ingredients Inc. develops, produces, and sells natural ingredients from edible and inedible bio-nutrients. The company operates through three segments: Feed Ingredients, Food Ingredients, and Fuel Ingredients. It offers a range of ingredients and customized specialty solutions for customers in the pharmaceutical, food, pet food, feed, industrial, fuel, bioenergy, and fertilizer industries. The company collects and transforms various animal by-product streams into useable and specialty ingredients, such as collagen, edible fats, feed-grade fats, animal proteins and meals, plasma, pet food ingredients, organic fertilizers, yellow grease, fuel feedstock, green energy, natural casings, etc.