| Business | Phone |
| Heather & Little Ltd 3205 14th Ave, Markham L3R 0H1 | (905) 475-9763 |
| Iso-Lux Mfg Co Ltd 150 Ferrier St, Markham L3R 3K3 | (905) 470-1133 |
| Kat Metal Fabricators 10 Gormley Industrial Ave, Markham | (905) 888-5260 |
| Townsend Sheet Metal Ltd 12 Heritage Rd, Markham L3P 1M4 | (905) 294-6697 |
| Electronic Metalform Ind Ltd 435 Steelcase Rd E, Markham L3R 2M2 | (905) 475-1217 |