| Business | Phone |
| Asi Group Ltd 250 Martindale Rd, St Catharines L2R 6P9 | (905) 641-0941 |
| Gryphon International Engrng 80 King St #404, St Catharines L2R 7G1 | (905) 984-8383 |
| Innovative Cad Cam Solutions 13 Beech St, St Catharines L2R 2B6 | (905) 682-3959 |
| Jagger Hims Ltd 1 St. Paul St #601, St Catharines L2R 7L2 | (905) 687-1771 |
| Kanawyn Resource Group 9 Chancery Cir, St Catharines L2M 7R3 | (905) 935-2818 |
| Kerry T Howe Engineering Ltd 98 Church St, St Catharines L2R 3C8 | (905) 688-6550 |
| Niagara Engineering 18 Chessington St, St Catharines L2S 3R4 | (905) 984-4145 |
| Peninsula Engineering Inc 45 Hannover Dr #2, St Catharines L2W 1A3 | (905) 688-6061 |
| Philips Engineering Ltd 1 St. Paul St, St Catharines L2R 7L2 | (905) 688-0176 |
| Pmp Niagara 26 Hiscott St, St Catharines L2R 1C6 | (905) 687-9778 |
| Barr Associates 166 Martindale Rd, St Catharines L2S 3Y9 | (905) 684-8585 |
| Sram Fuz Engineering Analyst 25 Ernest St, St Catharines L2N 6A6 | (905) 937-7557 |
| Steelcon Engineering 73 Ontario St, St Catharines L2R 5J5 | (905) 685-0181 |
| Synectics 36 Hiscott St #200, St Catharines L2R 1C8 | (905) 704-0763 |
| Totten Sims Hubicki Assoc 36 Hiscott St, St Catharines L2R 1C8 | (905) 682-0212 |
| Upper Canada Consultants 215 Ontario St, St Catharines L2R 5L2 | (905) 688-9400 |
| Can-Ecosse Engineering 261 Martindale Rd, St Catharines L2W 1A2 | (905) 682-5633 |
| Cetcon Engineering 17 Farmington Dr, St Catharines L2S 3E8 | (905) 685-0376 |
| Cybex Corp 50 Carmine Cres, St Catharines L2S 3M5 | (905) 984-6621 |
| Dalhousie Materials Engrng Ltd 20 Canal St, St Catharines L2N 4S8 | (905) 935-9407 |
| Denco Engineering Ltd 261 Martindale Rd, St Catharines L2W 1A2 | (905) 641-2364 |
| Earth Tech Canada Inc 80 King St #2, St Catharines L2R 7G1 | (905) 688-4272 |
| Ellis Engineering Inc 44 Port Master Dr, St Catharines L2N 7A6 | (905) 934-9049 |
| Gadra Enterprises 23 Hanover Dr, St Catharines L2W 1A2 | (905) 688-6151 |