| Business | Phone |
| Guardian Armored Security 871 W River Center Dr Ne, Comstock Park 49321 | (616) 785-8818 |
| Guardian Armored Security 138 Spring St, Comstock Park 49321 | (212) 625-9393 |
| Video-Tech-Tronics Inc 859 W River Center Dr Ne, Comstock Park 49321 | (616) 785-3700 |