| # | Company name | Role | # of projects |
|---|---|---|---|
| 1 | S. Agnon Engineers Ltd. | Sanitary engineering | 4 |
| 2 | S. Gilboa Engineers & Consultants | Sanitary engineering | 143 |
| 3 | Sanit Engineers Ltd. | Sanitary engineering | 7 |
| 4 | Scan-Clean Oy Ab | Sanitary engineering | 1 |
| 5 | Scheu & Wirth TGA und Service GmbH | Sanitary engineering | 0 |
| 6 | SOLAR4ENERGY Haustechnik GmbH | Sanitary engineering | 1 |
| 7 | Southern Chute, Inc. | Sanitary engineering | 6 |