| Business | Phone |
| Sheet Metal 755 Independent Rd, Oakland 94621 | (510) 562-0823 |
| Ghiorso Brothers 801 100th Ave, Oakland 94603 | (510) 632-0830 |
| Ghiorso Brothers Inc 750 Tartarian St, Oakland 94603 | (510) 632-1882 |
| Svartvik Metalworks Ltd 4126 Mlk Jr Way, Oakland 94609 | (510) 428-4931 |
| Wes-Co Industries 910 23rd Ave, Oakland 94606 | (510) 534-3320 |