| Business | Phone |
| Aecon Ind Inc 840 7 Ave Sw #2020, Calgary T2P 3G2 | (403) 263-3095 |
| Altronic Inc 144 Woodridge Close Sw, Calgary T2W 5M2 | (403) 251-7846 |
| Tuxtla Gas Engineering Ltd 2424 4 St Sw #1020, Calgary T2S 2T4 | (403) 245-2775 |
| Waukesha Engine 311 6 Ave Sw #1380, Calgary T2P 3H2 | (403) 266-8666 |
| Cecap Service Ltd 3627 48 Ave Se, Calgary T2B 3N8 | (403) 248-5627 |
| Collicutt Hanover Power System 633 6 Ave Sw #1600, Calgary T2P 2Y5 | (403) 720-3355 |
| Dresser-Rand Canada Inc 5920 1a St Sw #205, Calgary T2H 0G3 | (403) 299-2560 |
| Gas Liquids Engineerng Ltd 2749 39 Ave Ne #300, Calgary T1Y 4T8 | (403) 250-2950 |