- Air-quality and Air Purifier Filters
- Environmental impact studies
- Oceanographic and biological research
- Recycling and Waste management
- Water Purifier and Water Filters
| Company name | Address | City | Phone |
|---|---|---|---|
| Büsscher & Hoffmann | Velika cesta bb, Odra | Zagreb | +385 1 24 55 790 |
| Dvokut Ecro ltd. | Trnjanska 37 | Zagreb | +385 1 6114 868 |
| EMA d.o.o. | Martićeva 38 | Zagreb | +385 1 4552 707 |
| Gajeta Ltd. | Cankareva 6 | Zagreb | +385 1 3707 010 |
| GUMIIMPEX-GRP d.d. | Pavleka Miškine 64c | Varaždin | +385 42 404 500 |
| Kaprojekt d.o.o. | M. Vrhovca 3 | Karlovac | +385 47 648 166, +385 47 601 460 |
| Klima Buhin | Maksimirska 11 | Zagreb | +385 1 2300 096 |
| LabEKO Ltd. | Baštijanova 9 a | Zagreb | +385 1 3634 433 |
| Larix d.o.o. | Varaždinska ulica - odvojak II 4 | Jalkovec - Varaždin | + 385 42 379 479 |
| Marine trade d.o.o. | Andrije Hebranga 27 | Karlovac | +385 47 611 907 |
| Oikon Ltd., Institute for applied ecology | Avenija Dubrovnik 6-8 | Zagreb | +385 1 5507 100 |
| Proton d.o.o. | Toplička 149 | Turčin | +385 42 215 520 |
| Tehno filter d.o.o. | Valpovačka 24 | Beli Manastir | +385 31 701 211 |
| Zagreb Waste Water d.o.o. | Čulinečka cesta 287 | Zagreb | +385 1 2415 700 |