| Business | Phone |
| Daktronics Inc 1165 Chisolm Trail Dr, Diamond Bar 91765 | (909) 860-4933 |
| Gay C Diamond Bar 91765 | (909) 396-8106 |
| Signs By Susan 22853 Rio Lobos Rd, Diamond Bar 91765 | (909) 860-4072 |
| Mega Signs & Graphics 732 N Diamond Bar Blvd, Diamond Bar 91765 | (909) 860-5823 |