| Business | Phone |
| John Krantz Machine Shop 298 N 7th St, Brooklyn 11211 | (718) 387-0276 |
| Landa Machine Corp 573 Johnson Ave, Brooklyn 11237 | (718) 386-3165 |
| Maritime Works Inc 63 Flushing Ave # 128, Brooklyn 11205 | (718) 522-1137 |
| Mingrino Industries 30 Van Dam St, Brooklyn 11222 | (718) 389-6478 |