York Cryogenics
York Cryogenics provides deep cryogenic processing for a wide range of materials and mechanisms
https://www.yorkcryogenics.com/
Home - 300 Below, Inc.
Science, Technology, Cryotechnology, Cryogenic Processing of Materials - 300 Below, Inc.. Cryogenic treatment (deep tempering) for motor sports, firearms, softball bats, golf clubs, and musical instruments.
https://www.300below.com/
Diversified Cryogenics Home
Cryogenic Processing improves the life of your guns, engines, instruments, tools and much more!
http://www.diversifiedcryogenics.com/
CryoPlus Inc. - Cryogenic Processing
Science, Technology, Cryotechnology, Cryogenic Processing of Materials - CryoPlus Inc.. Cryogenic treatment of all metal tooling, stamping dies, gun barrels, engine components, brass instruments.
http://cryoplus.com/