- AERO FILTER, INC.
- AIR DUCT CLEANING OF
VIRGINIA
- AIR QUALITY SYSTEMS
INC.
- AIRWAY SYSTEMS, INC.
- AMDECON INC.
- AMERICAN CLEAN AIR,
INC.
- BOEING SUPPORT
SERVICES
- BURLEIGH COUNTY
HOUSING AUTHORITY
- C.E.T. ENVIRONMENTAL
- CHARLES COUNTY
PUBLIC SCHOOLS
- CHEMPOWER, INC.
- CHICAGO DEPT OF
HEALTH
- CINCINNATI MUSEUM OF
NAT’L HISTORY
- COMSTOCK CHIMNEY
- CONTINENTAL COFFEE
- DELTA AIRLINES
- DELTA INDUSTRIAL
CLEANING, INC.
- DISASTER KLEEN UP
INTERNATIONAL
- DUCTBUSTERS, INC.
- DUCTZ INTERNATIONAL
- DUPONT
- DUSTY DUCTS INC.
- EXIDE CORP
- FLORIDA HOSPITAL
MEDICAL CENTER
- FLORIDA POWER &
LIGHT
- FLORIDA STATE
UNIVERSITY
- FMC CORPORATION
- FOUNDRY & STEEL OF
AMARILLO
- GE (GENERAL
ELECTRIC)
- GENERAL DYNAMICS
- GENERAL MOTORS
- GOODYEAR
- GULF WIRE
- HAAGAN DAAS
- INDOOR AIR CARE
- INTEL CORPORATION
- IOWA STATE
UNIVERSITY
- JOHNSON WAX
- KRAFT FOODS
- L&W ENGINEERING
- LOCKHEED
- MAD HATTER
- MARTIN MARRIETTA
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- MITSUBISHI
- MONSANTO
- MOTOROLA
- NASA
- NORSTAR
- NORTHERN ROCKIES
CANCER CENTER
- OGDEN MARTIN
- OLYMPIC MAINTENANCE,
INC.
- OSRAM SYLVANIA
- PACIFIC GAS &
ELECTRIC
- PACIFIC SCIENTIFIC
- PAN AM WORLD
SERVICES
- PARKER-HANNIFIN
- PAUL DAVIS
RESTORATION
- PENNSYLVANIA POWER &
LIGHT
- PORTALES N.M. SCHOOL
DISTRICT
- RUTGER UNIVERSITY
- SERVICEMASTER CLEAN
- SERVPRO
- SKIL CORPORATION
- ST. MARY’S HOSPITAL
- STANLEY STEAMER
INTERNATIONAL
- SUPERIOR AIR
- TEXAS POWER VAC,
INC.
- TRUE TEMPER SPORTS
- TRW
- UNIVERSITY OF
HOUSTON, TX
- US ARMY
- US COAST GUARD
- US MARINE CORP
- US POSTAL SERVICE
- WESTINGHOUSE
- ZENITH ELECTRONICS
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