CO2 (food-grade)

Linde plc (NYSE/FWB: LIN; HQ Dublin, Ireland; operational HQ Guildford UK; ~$32B revenue 2023) is the world's largest industrial gas company. Linde owns and operates one of the two largest liquid oxygen cryogenic tanker fleets globally — thousands of vacuum-insulated trailers delivering LOX to hospitals, steel mills, chemical plants, and semiconductor fabs in 80+ countries. Linde does not primarily manufacture its own tankers (purchases from Chart Industries and other OEMs) but specifies custom vacuum-insulated designs for its fleet. Linde's medical oxygen business (hospital LOX supply) is the dominant fleet use case. Linde also supplies liquid oxygen rocket propellant to aerospace customers including NASA and commercial launch operators.

World's largest industrial gas company; provides gas odorant distribution and blending services globally including ethyl mercaptan. Air Liquide distributes and markets mercaptan gas odorants to LPG and natural gas utilities. Also a leading producer of industrial gases (oxygen, nitrogen, hydrogen, noble gases) for healthcare, industry, and energy. Air Liquide is listed among the top ethyl mercaptan market participants; primarily as a specialty gas blender/distributor rather than a primary mercaptan chemical producer.

One of the world's largest ammonia producers; Donaldsonville Complex (Louisiana) is the world's largest single ammonia production complex — 4.335M MT/year capacity, 6 plants on 1,400 acres along the Mississippi River. Produced 9.8M MT gross ammonia in 2024 across all facilities. Also operates plants in Iowa, Louisiana, Courtright (Ontario Canada), Ince (UK), Billingham (UK). Added CO2 capture at Donaldsonville (2025) enabling ~1.9M MT/year 'low-carbon ammonia' for export to Japan/Korea. Joint venture with JERA + Mitsui for $4B 'blue ammonia' plant in Louisiana.

German private industrial gas company; invested $25M in neon recycling technologies (2024) with 500,000 m³/year recovery facility established in Germany. Active in 30+ European and Asian markets. One of the top 5-7 global neon suppliers. Also a major provider of medical and industrial gases across Europe.