| Business | Phone |
| Engineered Spring Products 7400 Pinemont Dr, Houston 77040 | (713) 690-0391 |
| Draco Spring Mfg 7042 Long Dr, Houston 77087 | (713) 645-4973 |
| Gulf Coast Spring Inc 9125 Spring Branch Dr, Houston 77080 | (713) 461-5092 |
| Leeco Spring Intl 714 E Burress St, Houston 77022 | (713) 692-6383 |