| Business | Phone |
| A C Systems Inc 11724 Adie Rd, Maryland Heights 63043 | (314) 569-1000 |
| Lightolier Inc 2560 Metro Blvd, Maryland Heights 63043 | (314) 991-4004 |
| Luikart-Eason Assoc 11485 Dorsett Rd, Maryland Heights 63043 | (314) 298-7500 |
| Kjs Marketing 2302 Charlemagne Dr, Maryland Heights 63043 | (314) 469-4544 |
| John S Frazer Co 11425 Dorsett Rd, Maryland Heights 63043 | (314) 770-0511 |
| Jack Bentzinger & Assoc 11555 Rock Island Ct, Maryland Heights 63043 | (314) 997-4476 |
| Engineered Process Equipment 2436 Northline Industrial Dr, Maryland Heights 63043 | (314) 569-3344 |
| C P Clare Corp 48 Progress Pkwy, Maryland Heights 63043 | (314) 434-0311 |