| Business | Phone |
| 3 J Technologies 4200 N 2nd St, St Louis 63147 | (314) 436-2555 |
| Jeffco Drilling Tools 7024 Pennsylvania Ave, St Louis 63111 | (314) 832-3614 |
| Goedeker Machinery 9814 Tiffany Square Pkwy, St Louis 63123 | (314) 631-1440 |
| Granite Earth Inc 7208 Weil Ave, St Louis 63119 | (314) 647-3600 |
| Filtration Technologies Llc 10850 Galt Industrial Blvd, St Louis 63132 | (314) 432-2896 |