| Business | Phone |
| Cable Development 1160 N Darlene Ct, Upland 91784 | (909) 931-9098 |
| Cable Development 1220 N Darlene Ct, Upland 91784 | (909) 931-5933 |
| Cable Development 2133 Portarfield Way, Upland 91786 | (909) 931-7022 |
| Sunglo Technologies 1538 Howard Access Rd, Upland 91786 | (909) 373-0310 |