| Business | Phone |
| Advanced Metaltech Mfg Corp 194 Speedvale Ave W, Guelph N1H 1C3 | (519) 824-7653 |
| Alloy Welding Centre Ltd 163 Curtis Dr, Guelph N1K 1S9 | (519) 822-0577 |
| Arcfab Inc 311 Southgate Dr, Guelph N1G 3M5 | (519) 836-8689 |
| Infratech Metal Systems Inc 685 Speedvale Ave W #1, Guelph N1K 1E6 | (519) 763-9122 |
| Millennium Manufacturing Corp 404 Silvercreek Pky N, Guelph N1H 1E8 | (519) 763-6660 |
| Quinton Steel Ltd 570 Imperial Rd N, Guelph N1H 7M3 | (519) 821-3420 |
| Ralston Metal Products Ltd 92 Ferguson St, Guelph N1E 2Y6 | (519) 836-2968 |
| Bear Metal Products Inc 155 Dawson Rd, Guelph N1H 1A4 | (519) 821-4741 |
| Wena Manufacturing Co 10 Kingsmill Ave, Guelph N1E 5V9 | (519) 836-8656 |
| Welmar Group Mechanical Contr 340 Edinburgh Rd N, Guelph N1H 7Y4 | (519) 763-6633 |
| Wmf Fabricators Ltd 93 Regal Rd, Guelph N1K 1B6 | (519) 821-6775 |
| Campbell-Cox Inc 61 Arrow Rd, Guelph N1K 1S8 | (519) 836-4051 |
| Durose Manufacturing Ltd 460 Elizabeth St, Guelph N1E 6C1 | (519) 822-5251 |