| Business | Phone |
| Wirth Tool & Machine Corp 440 W Wegner Rd, Mchenry 60051 | (815) 344-0044 |
| W M Plastics Inc 5151 Bolger Ct, Mchenry 60050 | (815) 578-8888 |
| Summit Plastics 1207 Adams Dr, Mchenry 60051 | (815) 578-8700 |
| Engineered Molding Solutions 4913 Prime Pkwy, Mchenry 60050 | (815) 363-9600 |
| Fabrik Molded Plastics 5213 Prime Pkwy, Mchenry 60050 | (815) 385-9480 |
| Plaspros Inc 1143 Ridgeview Dr, Mchenry 60050 | (815) 338-2420 |