The following is a partial list of CDI's many customers worldwide:
- Abakan Semiconductors
- ABB Lummus
- Aeroject. Gen. Corp.
- AGA Gas
- Air Liquide
- Air Products & Chemicals
- Airco Industrial Gases
- Airgas
- AKZO Chemical
- Alabama Oxygen
- Allied Chemical
- American Cryogenics
- American Messer
- Amerigas
- Ansutech
- ARCO Polymers
- Aristech
- Asia Silicon Qinghai
- Atlanta Gas & Light
- Badger Co.
- Basell
- Bayer Corporation
- Bechtel
- Big Three Industries
- Black & Veatch
- BOC Process Plants
- Brown & Root
- Bufete Industrial
- Burdett Oxygen
- CEEG Group
- Celanese
- CES Ukraine Ltd.
- Champion Papers
- Chengda Engineering
- Chemetron
- China BlueStar
- Chinese Petroleum
- Chronopol
- Cincinnati Milacron
- Cloro de Tehuantepec
- CNG Transmission
- Columbia LNG
- Con Edison
- Conectiv
- Cosmodyne, LLC
- Cryoinfra
- Daqo New Materials
- Day & Zimmermann
- DC Chemical
- Diamond Shamrock
- Degussa
- Dofasco
- Dow Chemical
- Dow Corning
- DuPont
- Eastman Kodak
- Emei Semiconductor
- ENFI Engineering
- Ever Energy
- Fluor
- FMC Corporation
- Formosa Plastics
- Foster Wheeler
- GE Silicones
- Grupo Empresarial
- GS E&C
- Global Octane
- H.K. Ferguson
- Hamilton Standard
- Hankook Silicon
- Harper International
- Hemlock Semiconductor
- Himont
- HiSilicon
- Hoku Materials
- Holox
- Hughes Tool
- Huls
- Hyundai
- Infineum
- Inner Mongolia Feng Wei Silicon
- Isofoton
- Jacobs Engineering
- Jiangsu Shunda Semiconductor
- Jinhua Smelting Silicon
- Keyspan LNG
- Kobe Steel
- Kobelco
- Koch Refining
- Krupp Uhde
- Kunming Yeyan New Materials
- Lanco Solar Private
- Laser Energetics
- LDK Solar
- LG Engineering & Construction
- Linde AG
- Liquid Air
- Liqiud Carbonic
- Litwin
- Lotepro
- M2T Technologies
- MEMC
- Messer AGS
- MG Industries
- Mitsubishi
- Mitsubishi Materials
- Mitsui
- Monsanto
- Motorola
- MUD of Omaha LNG
- MW Kellogg
- Nan Ya Plastics
- NASA
- National Cylinder Gas
- Ningxia Sunshine Silicon
- NIPSCO Northern Indiana LNG
- NITOL Group
- Northstar Industries
- Novamont
- Occidental Petroleum
- Oriental Chemical Industries
- Osaka Titanium
- PCS Nitrogen
- Pennwalt
- Philadelphia Gas Works
- PMCP
- Podolsky Silicon
- PPG Industries
- Praxair
- Pritchard
- PV Silicon
- QED Engineering
- Ranch Cryogenics
- ReneSola
- Rhone Poulenc
- Rubicon Industries
- Shaanxi Tianhong Silicon
- Shanghai Strong Energy
- Shinko Air Water Cryoplant
- Silfab
- Sil-Pro
- SK Engineering & Construction
- S & B Engineering
- S.E.H. America, Inc.
- Selox
- Shanghai Strong Energy
- Shell
- Shin-Etsu Handotai
- Showa Denko
- Sichuan Xin Guang Silicon
- Snamprogetti
- Sobin Chemicals
- Sony
- Southern Connecticut Gas
- Stauffer Chemical
- Sumco USA
- Sumisho Fine Gas
- Sumitomo
- Superior Air Products
- Taiwan Synthetic Petrochemical
- TASCO
- Tate & Lyle
- TBEA
- Tenneco Chemicals
- Tennessee Eastman
- Texas Instruments
- Texas Petrochemicals LP
- Thai Industrial Gases
- Top Green Energy
- Toyo-Thai
- Tyroc International
- U. Rochester Laser Lab for Energetics
- Union Carbide
- Universal Undustrial Gases
- Usolye-Siberian Silicon Ltd.
- Vulcan Chemicals
- Wacker Chemitronics GmbH
- Woongjin
- Yichang CSG Polysilicon
- Zhongneng