Kinetics Noise Control
Control the transmission of noise, shock and vibration produced by mechanical, industrial or process equipment within or into a building structure with our isolation systems
http://www.kineticsnoise.com/hvac2.html

Auralex Acoustics
Auralex Acoustics: Providing a complete line of acoustic foam sound control products and accessories including sound absorption, sound diffusion, sound isolation, bass traps, and expert acoustical consulting.
http://www.auralex.com

O'Neill Engineered Systems, Inc.
Our noise control specialist’s furnish and install custom designed products required to eliminate noise problems. We use sound absorption, noise barriers and sound attenuators to reduce noise.
http://www.noiseproblems.com/

Sound Construction and Supply, Inc.
Pro grade recording studio furniture and mixing desks for your Yamaha, Sony or Digidesign gear including Custom Consoles, Isoboxes, Studio Equipment Racks and Recording Desks from Sound Construction and Supply, Nashville TN.
http://www.custom-consoles.com/

SoundSuckers.com
professional source for sound booths, vocal booths, recording booths, sound isolation booths, sound rooms, noise reduction, sound reduction, sound insulation, sound absorption, acoustic foams, sound foam, noise sound, noise foam, and soundproofing treatments to sound proof any project
http://www.soundsuckers.com

Milty
Milty - Armour Home Electronics
http://www.milty.co.uk/

Vibration, Isolation and Seismic Control Manufacturers Association
Association of manufacturers of seismic restrain, vibration isolation & noise isolation equipment. Education on proper use and application of vibration isolation mountings and seismic restraint devices. Development of industry guidelines & standards.
http://www.viscma.com

Custom Isolation
Makes acrylic shelf isolation rack. USA.
http://www.customisolation.com/

Isolation Systems Inc.
Providing uninterrupted power supplies with the use of an isolation transformer for computers, medical and telecom applications.
http://www.isolation-systems.com

Testing Procedure for Base Isolation Systems
SEAINT presented research paper on seismic isolation for free download.
http://www.seaint.org/seaocconvention/convention1999/Proceedings/MODAL.pdf