Illinois
Indiana
Iowa
Michigan
Minnesota
Nebraska
North Dakota
South Dakota
Wisconsin
Illinois
| AERCHEM, INC. | Bloomington |
| Chemcentral Corporation | Fort Wayne, Indianapolis, South Blend |
| DNP International | Terre Haute |
| General Alum & Chemical | Indianapolis |
| HARRIS & FORD, LLC | Indianapolis |
| JLM Marketing | Hammond, Mt. Vernon |
| LPS Industries | Indianapolis |
| MAYS CHEMICAL COMPANY, INC. | Indianapolis |
| Mid-State Chemical & Supply Corp. | Indianapolis |
| Sattva Chemical | Indianapolis |
| SUPERIOR SOLVENTS AND CHEMICALS | Indianapolis |
| Ulrich Chemical | Evansville, Fort Wayne, Indianapolis, Terre Haute |
| WARSAW CHEMICAL COMPANY, INC. | Warsaw |
| WILSON INDUSTRIAL SALES CO., INC. | Brook |
| BARTON SOLVENTS, INC. | Des Moines |
| Hawkins Chemical | Slater |
| Helm New York Chemical | Des Moines |
| Johnson Manufacturing Company | Princeton |
| National Ammonia | Council Bluffs |
| Tanner Industries | Council Bluffs |
| A.T. CALLAS COMPANY | Troy |
| Aarbor International | Brighton |
| Aga Gas | Grand Rapids,Traverse city |
| AMERICHEM SALES CORPORATION | Mason |
| Anar Chemical | Clinton Twp |
| Avatar | Detroit |
| BAKER & COLLINSON, INC. | Detroit |
| BOEHLE CHEMICALS, INC. | Southfield |
| C.L. HUESTON CO., INC. | Detroit |
| Chemcentral Corporation | Detroit |
| Cole Chemical & Distributing | Detroit |
| Haviland Products Company | Grand Rapids, Kalamazoo |
| IDEAS | Detroit |
| MATTESON -RIDOLFI,INC. | Riverview |
| National Ammonia | Inkster |
| PVS CHEMICALS, INC. | Detroit |
| S.C.D. CHEMICAL DISTRIBUTORS, INC. | Detroit |
| Seegot | Detroit |
| Tag Chemicals | Southfield |
| Tanner Industries | Inkster |
| THE HARRY HOLLAND CO. INC. | Royal Oak |
| Wacker Chemicals | Adrian |
| WEBB CHEMICAL SERVICE CORP. | Muskegon Heights |
| Young Chemical | Grand Rapids |
| Avatar | Mew Brighton |
| CHEM/SERV | Minneapolis |
| GEORGE C. BRANDT,INC. | St. Paul |
| HAWKINS CHEMICAL INC. | Minneapolis |
| Micro Powders | Minneapolis |
| WEBB CHEMICAL SERVICE CORP. | Muskegon |
| WORUM CHEMICAL CO. | St. Paul |
| ACME SOUTHERN, INC. | Charlotte |
| CFS ENTERPRISES, INC. | Charlotte |
| CHEM-WAY CORPORATION | Charlotte |
| CHOU ENTERPRISES LTD. | Charlotte |
| CONTINENTAL INDUSTRIAL CHEMICALS, INC. | Charlotte |
| Daiichi Fine Chemicals | Omaha |
| SOUTHCHEM, INC. | Durham |
| SURRY CHEMICALS, INC. | Mount Airy |
| WORTH CHEMICAL CORPORATION | Greensboro |
| ALDRICH CHEMICAL CO. | Milwaukee |
| Chemcentral Corporation | Milwaukee |
| COLUMBUS CHEMICAL INDUSTRIES | Columbus |
| General Alum & Chemical | Saukville |
| Hawkins Chemical | Fond du Lac, Superior |
| HYDRITE CHEMICAL COMPANY | Brookfield |
| WAUSAU CHEMICAL CORPORATION | Wausau |
| Zink & Triest | Kenosha |