| Business | Phone |
| Avanim 4980 Rue Buchan, Montreal H4P 1S8 | (514) 739-4456 |
| Logan Abrasifs 1801 Av De La Salle, Montreal H1V 2K1 | (514) 257-6385 |
| North Star Diamond Abrasives 5000 Rue Brock, Montreal H4E 1B6 | (514) 769-8868 |
| Productions Diamant Ltee 4810 Rue Jean-Talon O #418, Montreal H4P 2N5 | (514) 735-9131 |
| Diamond Productions Ltd 4810 Rue Jean-Talon O #418, Montreal H4P 2N5 | (514) 342-5552 |