| Company | Category | Area | Address | Web | E-mail | Contact person |
| AIR PRODUCTS | Mfg Industrial Gases | Oregon | 20001 SW TETON AVE, TUALATIN, Washington, Oregon, 97062-8808, USA |
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Tom Meier |
| AIR PURIFICATION SYSTEMS | Air Cleaning & Purifying Equip | Oregon | 5510 SE MCLOUGHLIN BLVD, PORTLAND, Multnomah, Oregon, 97202-5142, USA |
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Jack Neilsen |
| AIR QUALITY ANALYSIS LAB | Air/water/waste Management | Oregon | 2798 ROBINS LN SE, SALEM, Marion, Oregon, 97317-9301, USA |
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Susan Freesland |
| AIR QUALITY DIV | State Government-Environmental | Oregon | 811 SW 6TH AVE, PORTLAND, Multnomah, Oregon, 97204-1334, USA |
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| AIR QUALITY SERVICES | Building Maintenance Services | Oregon | 168 NE 3RD AVE, HILLSBORO, Washington, Oregon, 97124-3150, USA |
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| AIR RITE CONTROL | Heating Contractors | Oregon | 1623 SE 6TH AVE, PORTLAND, Multnomah, Oregon, 97214-3502, USA |
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Thomas Short |
| AIR SCIENCES INC | Nonclassified Establishments | Oregon | 111 SW 5TH AVE STE 2080, PORTLAND, Multnomah, Oregon, 97204-3651, USA |
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| AIR SONORA | Airline Companies | Oregon | 8383 NE SANDY BLVD STE 258, PORTLAND, Multnomah, Oregon, 97220-4967, USA |
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| AIR SPIRAL NW | Unclassified | Oregon | 15800 SE 114TH AVE, CLACKAMAS, Clackamas, Oregon, 97015-9034, USA |
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| AIR SYSTEMS SALES & RENTALS | Air Conditioning Room Units-De | Oregon | 2032 WEMBLEY PL, LAKE OSWEGO, Clackamas, Oregon, 97034-2608, USA |
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Charley Rowland |
