| Business | Phone |
| A & A Precision Manufacturer 10044 Hamilton Ave, Cincinnati 45231 | (513) 742-9418 |
| Bedrock Refractories 7722 Reinhold Dr, Cincinnati 45237 | (513) 821-2500 |
| Boye & Emmes Machine Tool Co 3640 Llewellyn Ave, Cincinnati 45223 | (513) 541-2520 |
| Industrial Flask Inc 1848 Springdale Rd, Cincinnati 45231 | (513) 742-2511 |
| Low Stress Grind Inc 12077 Mosteller Rd, Cincinnati 45241 | (513) 771-7085 |
| Okl Can Line 11235 Sebring Dr, Cincinnati 45240 | (513) 825-1655 |
| Peters Machine Tool Inc 2210 Jimray Ct, Cincinnati 45233 | (513) 941-0866 |
| Pro Hold Workholding Inc 3316 Montgomery Rd, Cincinnati 45207 | (513) 281-0804 |
| Robotics Research Corp Po Box 62298, Cincinnati 45262 | (513) 831-9570 |
| Stephens Automotive 6602 Lebanon St, Cincinnati 45216 | (513) 641-3296 |