Coldwater Rendering Companies 600 Jay St Official site of Darling International Inc, the only publicly-traded rendering company, leading the country in providing fat and bone rendering, food by-product recycling and used cooking oil collection solutions to the nation's food processing industry for over 125 years. Coldwater MI Rendering Companies Darling International Inc www.darlingii.com rendering food by-product recycling grease trap service restaurant services used cooking oil removal grease removal animal by products animal carcass removal grease trap maintenance national renderer sustainable solutions to food industry rendering food by-product recycling grease trap service restaurant services used cooking oil removal grease removal animal by products animal carcass removal grease trap maintenance national renderer sustainable solutions to food industry Business Reviews Darling International Inc Testimonials