| Business | Phone |
| Tri-Brothers Chemical Corp 1986 Raymond Dr, Northbrook 60062 | (847) 564-2320 |
| Cte 40 Skokie Blvd, Northbrook 60062 | (847) 559-1336 |
| Kao Specialties America Llc 601 Driftwood Ln, Northbrook 60062 | (847) 564-8436 |
| Lawter International Inc Northbrook 60062 | (847) 498-0066 |
| Rainbow Chemicals Co 910 Skokie Blvd, Northbrook 60062 | (847) 562-9300 |