| # | Raison sociale | Rôle | Nombre de projets |
|---|---|---|---|
| 1 | 2nd Century Plumbing | plomberie (installation) | 1 |
| 2 | 4 G Plumbing & Heating Inc | plomberie (installation) | 0 |
| 3 | A1 Plumbing Masters Inc. | plomberie (installation) | 0 |
| 4 | A ALL Porpoise Services Inc | plomberie (installation) | 1 |
| 5 | A & A Plumbing Inc. | plomberie (installation) | 2 |
| 6 | Aaron Plumbing Contractor of Miami Inc. | plomberie (installation) | 1 |
| 7 | Aarons Plumbing Corporation | plomberie (installation) | 1 |
| 8 | A A Schleman Plumbing | plomberie (installation) | 3 |
| 9 | Abbott Industries, Inc. | plomberie (installation) | 2 |
| 10 | AB CJ Björnberg | plomberie (installation) | 2 |
| 11 | A B C Plumbing Co. Inc. | plomberie (installation) | 1 |
| 12 | Abc Plumbing Company Inc | plomberie (installation) | 1 |
| 13 | Abe Plumbing & Heating | plomberie (installation) | 1 |
| 14 | Abitua Mechanical | plomberie (installation) | 2 |
| 15 | Able Plumbing | plomberie (installation) | 1 |
| 16 | ABL Plumbing & Heating | plomberie (installation) | 1 |
| 17 | A B L Plumbing & Heating Corp | plomberie (installation) | 0 |
| 18 | AB Rörläggaren | plomberie (installation) | 1 |
| 19 | Abr Plumbing And Heating | plomberie (installation) | 1 |
| 20 | AB Täby Rör | plomberie (installation) | 1 |
