| Business | Phone |
| Newdai Inc 43 S Linden Ave, San Francisco 94080 | (650) 589-4231 |
| Oneto Manufacturing Co 146 S Maple Ave, San Francisco 94080 | (650) 875-1710 |
| Blakeway Metal Works Inc 101 Cargo Way, San Francisco 94124 | (415) 647-4494 |
| Valley Sheet Metal 391 Forbes Blvd, San Francisco 94080 | (650) 871-8292 |
| Delano Brothers 1300 Illinois St, San Francisco 94107 | (415) 285-4343 |
| Lewis Metal Products Inc 884 Folsom St, San Francisco 94107 | (415) 957-1158 |
| Robert Yick Co 261 Bayshore Blvd, San Francisco 94124 | (415) 282-9707 |