| Business | Phone |
| Mc Garvin Engineering 35 Maple St # 1, Lowell 1852 | (978) 454-2741 |
| Century Metal Products Inc 181 Stedman St # 9, Lowell 1851 | (978) 454-8051 |
| Precise Industries Inc 639 Lakeview Ave, Lowell 1850 | (978) 453-8490 |
| Prelco Corp 170 Lincoln St, Lowell 1852 | (978) 458-8763 |
| Edward Kelly Sheet Metal Inc 116 Fletcher St, Lowell 1854 | (978) 458-8313 |
| Ideas Inc 160 Tanner St, Lowell 1852 | (978) 453-6864 |
| L & R Assoc 50 Boston Rd, Lowell 1852 | (978) 452-0078 |
| Kelly Sheet Metal Inc 277 Dutton St, Lowell 1852 | (978) 452-6282 |