DSP Cryogenics - Custom-built cryogenic systems and treatment of items to increase strength and durability. In Largo, FL.

Cryotron (Canada) Ltd. - Cryogenic processing of equipment. Has a nicely detailed overview of the company's Vari-Cold cryogenic process and equipment. In Spruce Grove, Alberta, Canada.

Cryo-Tech Inc. - Cryo-Tech uses a different "dry" technique of cryo-hardening materials invented in 1966 -- cryogenic temperatures are used, but the material never contacts the liquid nitrogen. In Hazel Park, Michigan.

One Cryo hardened softball bats - Yes, you can use cryogenic processing to hit home runs.

Temper Master Cryogenics - Cryogenic treatment center and processor manufacturing. Also manufactures an oven for heat treating. In Calgary, Alberta, Canada.

American Cryogenics, Inc. - Microprocessor controlled deep cryoheat treatment of tool and high speed steels. Custom cryoprocessor design and fabrication. In Waukesha, WI

Nitrotech - Controlled freeze tempering (cryogenic processing) of metal tools for the steel industry, paper industry, motor sports, golf, etc. A nice explanation of the process is included. In Phoenix, Arizona.

Adamas Acoustic Strings - Cryogenic treated guitar strings.

The Brass Bow - Specialists in the cryogenic freezing of musical instruments. Very good explanation of the process. In Arlington Heights, Illinois.

CryoPlus Inc. - Cryogenic treatment of all metal tooling, stamping dies, gun barrels, engine components, brass instruments. To make them more wear resistant. In Wooster, Ohio.

LN2 Cryogenics, Inc. - Cryogenic processing of metals, plastics & nylon. Good explanations of the process. In Fort Worth, Texas.

One Cryo - Cryogenic tempering treatment services for auto racing, tooling, firearms, golf clubs and musical instruments - Seattle, Washington and Wasilla, Alaska

Diversified Cryogenics - Cryogenic Processing improves the life of your guns, engines, instruments, tools and much more. In Minneapolis Minnesota

I.C.E - Industrial Cryogenic Enterprises Ltd. - Cryogenic tempering of metals and other materials for increased durability and longer wear life. Company uses a dry single treatment process on a wide range of products. In St. Anns, Ontario Canada

Cryopro Temper-Master - Temper-Master cryogenic processor manufacturing and tempering. Improves durability and performance of tools, musical instruments, gun barrels and more. In Springfield, MO.

Advisor In Metals - Home of William "Bill" Bryson, metallurgist who specializes in the theory and practice of cryogenic and heat treatment of materials. Author of a technical book on each subject. Also provides cryogenic processing services and sales of cryogenic and heat treatment equipment. In Union, New Hampshire.

Cryogenic Engineering - Specializes in "deep cryogenic tempering," extending the useful life of tools, metal parts, plastics and many other materials. In Cedar Rapids, IA.

ARCTICBlaze Cryo Treatments, Inc. - Cryogenic hardening of sports equipment, drill-bits, tools, firearms, and instruments. In Chicago, Illinois.

Fountainhead Cryogenic Processing - Deep cryogenic processing and tempering of all your tooling and wear parts. In York PA.

Bennington Tool Inc. - Increase the wear resistance of your production tooling with cryogenic treatment and electro magnetic processing from Bennington Tool. In Cowlesville, NY.

TechSpec, Inc. Cryogenic Treatment Center - TechSpec Inc. is a Deep Cryogenic Treatment Center, which improves the performance of musical instruments, tools, dies, guns, golf clubs, bearings, engines, hammermills, and rotors. In Kansas City MO.

Controlled Thermal Processing Cryogenics - Cryogenic processing for racing and many industrial applications, including tools and firearms. In Chicago and Rockford, IL, Charlotte, NC, and Waltharn, MA.

Coldfire Cryogenics Technology - Manufacturer of thermal cycling equipment and deep cryogenic tempering machines for processing of metals. Offers technology licensing and distributorships. In Largo, FL.

300 Below, Inc. - Cryogenic processing for motor sports, firearms, softball bats, golf clubs, and musical instruments. In Decatur, IL.

Atlantic Cryogenic Processing, Inc. - "Advanced" (cycles of cooling and heating) cryogenic processing of industrial items, machine and auto parts, sporting goods, etc. Detailed site. In Joppa, Maryland .

ThermoDyne - Cryogenics and integrated thermal coatings for engine parts, industrial tools, and sporting equipment. In White City, Oregon.

Cryocon, Inc. - Deep Cryogenic Tempering (DCT) of metals, alloys, and other synthetic materials. The only publicly traded Cryogenics company (OTC BB:CRYQ). In Ogden, Utah.

Cryoforce, L.C. - A manufacturer and distributor of cryogenic processing equipment, which licenses its techniques to companies in several states. In Lenexa, KS.

COLDfire Michigan Thermal Cycling - COLDfire Michigan-Thermal Cycling. Improve the performance of a wide variety of materials, specializing in cutting tools, golf and motorsports. In Lapeer, Michigan.

COLDfire Chicago Thermal Cycling - COLDfire Thermal Cycling - next generation treatment of metals, compounds, nylons. This includes sports equipment, auto parts, and industrial parts. In Chicago IL.

Cryogenic Solutions - Deep cryogenic treatment to improve the life and performance of industrial tooling, racing engines and parts, firearms, and sporting goods. In Savannah, Georgia.

Frozen Solid - Deep Cryogenic Processing of most ferrous and non-ferrous materials to increase durability and wear resistance. Located in Suffolk, England

Crygenius - Extending the life of your tools though Cryogenic Tempering. Located Durban, South Africa

Alpine Cryogenics, Inc. - Cryogenic processing of materials, including tools, auto parts, rifle barrels, etc. One page has a useful research article with photos. In Moscow, PA.

Basics of Cryonics Metallurgy - Good basic article on how cryogenic processing works. Author unknown. Date, circa 1998.

Role of Eta-carbide Precipitations in the Wear Resistance Improvements of - 1994 technical article (from the journal ISIJ International) which investigates the wear resistance and the microstructure of tempered alloy tool steels after cryogenic treatment.

Dynatherm Alloys -- Deep Cryogenics - Cryogenic treatment of metals, especially engine parts. In South India.

Frozen Gears - Research article focusing on the controlled dry cryogenic treatment. Author and date unknown.

Cryo-Tech Ltd. - Sale of cryogenic processors to Asia and Pacific areas. Also provides cryoprocessing services at several sites throughout New Zealand.

Absolute Zero Cryo-Processing - Cryogenic proccessing of metals and other materials. In Wauconda, IL.

Canadian Cryo-Bond - Deep cryogenic treatments to increase the durability of machine & cutting tools, motor sport equipment, and rifle barrels. In Edmonton, Alberta Canada

Carboteh Engineering: Cryo Cool - Cryogenic tempering of brake rotors for automotive road racing and manufacturer of racing brake pads. In Ft. Lauderdale, Florida.

Cryotreatment: Panacea or Black Magic? - A detailed discussion of the pros and cons of cryogenic treatment, from Cold Facts, the quarterly magazine of the Cryogenic Society of America, Spring 1996.

Leading Edge Cryogenics, Inc. - Leading Edge Cryogenics has pioneered cryogenic process engineering, with three patents on the process used to treat spark plugs, brake pads, and orthopedic devices. In Camp Verde, Arizona.