Producer
Darling Ingredients (CTH)
NYSE-listed animal by-products rendering and recycling company; revenue $6.13B TTM (2025). Natural casings division operates under the CTH (Combinatie Teijsen Van Den Hengel) brand — a historic Dutch natural casing company acquired by Darling. CTH is one of the world's largest natural casing traders/processors. Darling also owns Diamond Green Diesel (50/50 JV with Valero — world's largest renewable diesel plant in Norco, Louisiana). Darling processes animal fat, protein, blood, feathers, and casings from slaughterhouses globally into fuel, feed, and food ingredients.
4
Inputs supplied
2
Goods downstream
5
Facilities
0
Stories
What they make
4 inputs Darling Ingredients (CTH) supplies
Click an input to see every good that depends on it, every country that produces it, and every other company in the supply chain.
agricultural
Rendered Animal Protein Meal (Chicken / Meat Meal) →
agricultural
Rendered Animal Protein Meal (Chicken / Meat Meal) →
manufactured
Beef Tallow (Technical/Inedible Grade) →
agricultural
Natural Hog Gut Casings (Weasands, Runners, Rounds) →
Where it shows up
Goods downstream
Essential goods that depend on something Darling Ingredients (CTH) makes, pick one to see the full supply chain.
Where they make it
5 facilities
Darling CTH — Boxmeer, Netherlands →
NLBoxmeer, North Brabant · manufacturing
CTH (Combinatie Teijsen Van Den Hengel) natural casing operation, now Darling Ingredients subsidiary. Boxmeer, North Brabant is also the HQ of Hendrix Genetics (world's leading multi-species genetics company). The concentration of global food supply chain infrastructure in the North Brabant/Venlo region of the Netherlands is extraordinary: casings, genetics, and port logistics all concentrated in one small Dutch province.
Darling Ingredients (ex-Valley Proteins) Winchester VA Plant →
USVirginia · manufacturing
Former Valley Proteins flagship rendering facility in Winchester VA, acquired by Darling Ingredients in 2022 for approximately $1.1B. Valley Proteins was the dominant US East Coast commercial renderer with 11 facilities across MD, VA, NC, SC, TN, AL, and AR. The Winchester VA plant is the former headquarters and anchor facility. Valley Proteins acquisition significantly expanded Darling's US market share. Source: https://www.darlingii.com/news/darling-ingredients-completes-acquisition-of-valley-proteins
Darling Ingredients Irving TX Headquarters & Processing →
USTexas · manufacturing
Darling Ingredients headquarters in Irving TX (Las Colinas). Also home to key rendering operations management. Darling's Texas presence includes multiple collection and processing sites across the state. Source: https://www.darlingii.com/about-us
Darling Ingredients Irving Texas HQ & Rendering Operations →
USTexas · manufacturing
Corporate HQ and US rendering network anchor; Darling processes 15% of world's animal by-products from 260+ global facilities.
Diamond Green Diesel Norco LA Plant (Darling-Valero JV) →
USLouisiana · processing
Diamond Green Diesel LLC (50/50 JV: Darling Ingredients + Valero Energy) renewable diesel refinery in Norco LA. Capacity ~700 million gallons/year renewable diesel (post 2022 expansion). Uses rendered animal fats, used cooking oil, and distillers corn oil as feedstock. Same fat stream that used to be a low-value rendering by-product is now premium renewable fuels feedstock, bidding up fat prices and compressing protein meal margins. Source: https://www.darlingii.com/diamond-green-diesel
What else they do
Business segments
The company's full revenue map, where this supply-chain role fits within their broader business.
Rendering (Animal Byproduct Collection)
45%Renewable Diesel (Diamond Green Diesel)
30%Pharmaceutical Ingredients
10%Natural Casings (CTH)
15%
Intelligence
What's known
Sourced claims about this company's role in supply chains, chokepoints, concentration, incidents, dual-use connections.
Did you know2023
Darling Ingredients' Diamond Green Diesel JV with Valero Energy has transformed the economics of animal rendering in a way that creates a direct conflict between food production and fuel production: rendered animal fat (tallow, poultry fat, lard) is now premium feedstock for renewable diesel under the US Renewable Fuel Standard (RFS) D4 pathway, which earns $1.50-$2.00/gallon in Renewable Identification Number (RIN) credits on top of diesel market price. The RIN credit makes renewable diesel producers willing to pay more for animal fat than pet food or aquaculture feed manufacturers can afford. This has driven US beef tallow prices from ~$0.20-0.25/lb (pre-2020 baseline) to peaks above $0.70/lb (2022) and sustained elevated levels of $0.45-0.55/lb (2023-2024). Higher fat prices are economically rational for Darling — fat now earns more revenue than protein meal — but the effect is to simultaneously reduce the profitability of protein meal production (protein meal is the co-product whose revenue historically offset rendering collection costs) and to redirect fat away from traditional markets. The same US government energy policy (RFS renewable diesel incentives) that subsidizes cleaner transportation fuel is effectively taxing pet food and aquaculture feed manufacturers through elevated rendered fat prices. The RFS did not intend to affect pet food ingredient costs — but it did.
Darling Ingredients ↗Concentration2024
Darling Ingredients processes approximately 15% of the world's animal by-products through 260+ global facilities — yet rendering is nearly invisible in discussions of pet food supply chains. Any food safety crisis in the human protein supply chain (avian influenza, African swine fever) that reduces slaughter volumes simultaneously shrinks the by-product stream that pet food depends on for protein meal.
Darling Ingredients Inc. ↗