Alaska || Idaho || Montana || Oregon || Washington || Wyoming
Idaho
| Brose chemical Company | Twin Walls |
| Great Western Chemical | Idaho Falls |
| E. T. Horn Company | Boise |
| Van Waters & Rogers | Nampa |
Montana
| HCI/DYCE CHEMICAL INC. | Billings |
| Great Western Chemical | Helena |
| Hawkins Chemical | Billings |
| HCI | Billings |
| Van Waters & Rogers | Billings |
Oregon
| American International Chemical | Portland |
| C.D.I. | Portland |
| Chemcentral Corporation | Portland |
| Composition Materials Co. | Portland |
| CORDANO CHEMICAL | Portland |
| E.T. Horn Company | Portland |
| FE 3 | Klamath Falls |
| Great Western | Portland |
| Helm New York Chemical | Portland |
| JUNGBUNZLAUER | Mikwaukee |
| Micro Powders | Portland |
| Mineral Pigments/Laporte Pigments | Portland |
| Synergistic Performance | Portland |
| Tarr | Eugene, Grants Pass, Medford, Portland |
| Van Waters & Rogers | Portland |
| Chemcentral Corporation | Seattle, Spokane |
| CASCADE COLUMBIA DISTRIBUTION | Seattle |
| CHEMICAL DISTRIBUTORS | Seattle |
| COLUMBIA RIVER CARBONATES | Seattle, Woodland |
| E.T. Horn Company | Seattle |
| J.F. SHELTON COMPANY | Seattle |
| Micro Powders | Seattle |
| Mineral Pigments/Laporte Pigments | Seattle |
| Norman, Fox & Co. | Seattle |
| Palex Container | Seattle |
| Synergistic Performance | Seattle |
| Tarr | Auburn, Vancuver |
| TR INTERNATIONAL | Seattle |
| VAN WATERS & ROGERS | Kent, Kirkland,Sattle,Spokane |
FREMONT CHEMICAL CO. Riverton