| Business | Phone |
| Bel-Air Plastics Inc 2304 S Baker Ave, Ontario 91761 | (909) 930-5535 |
| Roechling Engineered Plastics 2040 S Carlos Ave, Ontario 91761 | (909) 923-6601 |
| S & W Ind Plastics Inc 1200 S Wanamaker Ave # B, Ontario 91761 | (909) 390-0090 |
| Superior Mold Co 1927 E Francis St, Ontario 91761 | (909) 947-7028 |
| Thermodyne International Ltd 1841 S Business Pkwy, Ontario 91761 | (909) 923-9945 |