| Business | Phone |
| Manuel Brothers Inc 908 Taylorville Rd # 104, Grass Valley 95949 | (530) 272-4213 |
| R E Mc Collum 13515 Pleasant Ln, Grass Valley 95945 | (530) 272-7611 |
| Ward Systems Inc 12912 Madrona Leaf Ct, Grass Valley 95945 | (530) 271-1800 |
| Pastel Electronic Design 10272 Round Valley Rd, Grass Valley 95949 | (530) 272-2914 |
| Seghezzi Enterprises Grass Valley 95945 | (530) 272-7533 |