| Business | Phone |
| Humphrey Automation Inc 570 Alden Rd, Markham L3R 8N5 | (905) 479-3633 |
| Jaybell Control Products Ltd 441 Esna Park Dr #10, Markham L3R 1H7 | (905) 475-0072 |
| Devine & Assoc Ltd 375 Steelcase Rd E, Markham L3R 1G3 | (905) 479-2130 |
| Romatec Inc 25 Royal Crest Crt, Markham L3R 9X4 | (905) 305-9964 |
| Winda International Inc 570 Hood Rd #7, Markham L3R 4G7 | (905) 474-1250 |