| Business | Phone |
| A2z Canada 2900 Eglinton Ave E #203, Scarborough M1J 2E4 | (416) 430-0111 |
| Intratech Engineering Labs Ltd 1080 Tapscott Rd #31, Scarborough M1X 1E7 | (416) 754-2077 |
| Kluchert & Assoc Inc 3600 Ellesmere Rd #3, Scarborough M1C 4Y8 | (416) 282-1104 |
| Lynk Solutions Inc 19 Knowlton Dr, Scarborough M1M 2G8 | (416) 266-2201 |
| N L Vera Assoc Inc 70 Brinloor Blvd, Scarborough M1M 1L5 | (416) 265-4190 |
| Patriot Engineering Ltd 80 Nashdene Rd #132, Scarborough M1V 5E4 | (416) 293-7716 |
| Power Quality Institute 705 Progress Ave #30, Scarborough M1H 2X1 | (905) 791-0791 |
| T L Powell & Assoc Ltd 413 Calderstone Cres, Scarborough M1C 3A3 | (416) 286-3741 |
| T S Consultants 2400 Midland Ave, Scarborough M1S 1P8 | (416) 298-8466 |
| Tapakuma Engineering 170 Finchdene Sq #11, Scarborough M1X 1B3 | (416) 335-9510 |
| Terra Firma Plus Inc 100 Mclevin Ave #202, Scarborough M1B 5K1 | (416) 321-3274 |
| Ttg Process Engineering 83 Dynamic Dr #9, Scarborough M1V 4C9 | (416) 609-8859 |
| Engineered Maintenance Systems 60 Venture Dr #2, Scarborough M1B 3S4 | (416) 283-5487 |
| Electrical Operating Networks 91 Rylander Blvd, Scarborough M1B 5M5 | (416) 287-8588 |
| Canada Engineering Svc Ltd 39 Davisbrook Blvd, Scarborough M1T 2H6 | (416) 492-4000 |
| Carney & Assoc Ltd 120 Warden Ave, Scarborough M1N 2Z4 | (416) 755-9033 |
| Charles G Turner & Assoc 60 Venture Dr #2, Scarborough M1B 3S4 | (416) 283-5995 |
| Fire Facts Inc 45 Port Royal Trail, Scarborough M1V 2G7 | (416) 754-0459 |
| Fleck Chemical Industries Ltd 10 Milner Business Crt #200, Scarborough M1B 3C6 | (416) 291-0011 |
| Fliegl Engineering 5 Wonderland Dr, Scarborough M1G 2X9 | (416) 439-8595 |