NORTHBROOK, Ill.--(BUSINESS WIRE)--CF Industries Holdings, Inc. (NYSE: CF), the world's largest producer of ammonia, today announced a shipment of certified low-carbon ammonia from its Donaldsonville, Louisiana, facility. Trafigura, a market leader in the global commodities industry, purchased the ammonia for shipment to Envalior, a global leader in Engineering Materials, which intends to use the low-carbon ammonia for the production of low-carbon caprolactam. Trafigura has loaded 23,500 metric. ...