| Business | Phone |
| Mid-Atlantic Industries 4321 Hartwick Rd, College Park 20740 | (301) 779-7364 |
| American Energy Master Inc 7307 Baltimore Ave # 211, College Park 20740 | (301) 699-0711 |
| Champion Windows Inc 5110 Roanoke Pl # 104, College Park 20740 | (301) 277-7200 |
| Creative Energy Corp 7305 Baltimore Ave # 303, College Park 20740 | (301) 277-7000 |
| U S Remodeling Corp 7305 Baltimore Ave, College Park 20740 | (301) 422-4200 |
| Unicorp Inc 4511 Knox Rd # 202, College Park 20740 | (301) 779-0900 |
| Us Thermo Corp 10011 Rhode Island Ave, College Park 20740 | (301) 345-8940 |
| Vinyl Technologies 4511 Knox Rd, College Park 20740 | (301) 779-2780 |