| Business | Phone |
| Americo Chemical Co 1515 E Woodfield Rd 740, Schaumburg 60173 | (847) 506-0778 |
| Americo Chemical Products Inc 1515 E Woodfield Rd, Schaumburg 60173 | (847) 805-0830 |
| Basf Corp 1821 Walden Office Sq, Schaumburg 60173 | (847) 925-5120 |
| Byk-Chemie Schaumburg 60193 | (847) 891-9340 |