| Business | Phone |
| Blow Mold Repair Svc 3929 E Guasti Rd # A, Ontario 91761 | (909) 605-9555 |
| Century Mold & Machine 1445 Brooks St # J, Ontario 91762 | (909) 984-8944 |
| Dayne Supply 1057 E Acacia St, Ontario 91761 | (909) 923-3270 |
| Diamond Injection Molds 4365 E Lowell St # E, Ontario 91761 | (909) 390-2260 |
| Honor Tek 1823 S Campus Ave, Ontario 91761 | (909) 923-8310 |
| Inland Plastics Inc 1455 Doubleday Ave, Ontario 91761 | (909) 390-4424 |
| J S Products 4752 W Mission Blvd # D, Ontario 91762 | (909) 464-9644 |
| L & H Molds 2031 Del Rio Way, Ontario 91761 | (909) 930-1550 |
| Nash-Webber Molds 1457 E Philadelphia St # 4, Ontario 91761 | (909) 930-9765 |
| Mainland Products Inc 2161 Maple Privado, Ontario 91761 | (909) 923-4353 |
| Ontario Mold 1721 S Vineyard Ave # C, Ontario 91761 | (909) 947-2310 |
| S C Mold 306 N Corona Ave, Ontario 91764 | (909) 937-1290 |
| Totem Plastics 1841 E Acacia St, Ontario 91761 | (909) 947-3900 |
| Zeman Enterprise 1701 S Vineyard Ave # E, Ontario 91761 | (909) 673-0495 |