| Business | Phone |
| Wassan Electronics 224 N Camac St, Philadelphia 19107 | (215) 568-9317 |
| Friend's Electric Philadelphia 19135 | (215) 332-3801 |
| Premium Electronics 5120 Market St, Philadelphia 19139 | (215) 747-9959 |
| Ralph Sales Co 2423 N 10th St, Philadelphia 19133 | (215) 235-5527 |