| Business | Phone |
| Postal Annex+ 595 Grand Ave # 102, San Marcos 92078 | (760) 471-8883 |
| Postal Annex+ 751 Center Dr # 108, San Marcos 92069 | (760) 741-1112 |
| Performance Poly & Packaging 1330 La Mirada Dr, San Marcos 92078 | (760) 510-6788 |
| Pack Lab Inc 1010 Rancheros Dr, San Marcos 92069 | (760) 480-5696 |
| Global Kaizen 133 Mata Way, San Marcos 92069 | (760) 752-5230 |