- LUBRICA OOD, Russe – Refinery for treatment and regeneration of used oils and waste oil products.
- AGRO LOGIC OOD, Sofia – Poultry breeding farm in Slavyanovo town.
- KRONOSPAN BULGARIA EOOD, Veliko Tarnovo, wood based panels manufacturer (PB and MDF).
- KRONOSPAN BULGARIA EOOD, Burgas, wood based panels manufacturer (PB, OSB and MDF).
- MONTUPET EOOD, Russe, Plant for production of aluminum applications (cylinder heads, chassis parts).
- CARLSBERG BULGARIA AD, Brewery Blagoevgrad.
- RUBIN TRADING AD, Pleven, Glass manufacturing plant.
- KEROS BULGARIA EAD, Russe, Manufacturing of wall and floor ceramic tiles.
- REFINERY PLAMA AD, Pleven, Plant for oil refining processing.
- POLYSAN AD, Russe – Production of bitumen, bituminous compounds, bio-diesel and processing of petroleum products.
- KURILO METAL AD, Kurilo, Sofia – Site for waste treatment.
- KAMENITZA AD, Brewery Haskovo and Brewery Plovdiv.
- VINPROM PESHTERA AD, Katunitsa, Plovdiv – Plant for ethanol production.
- MAKMETAL HOLDING AD, Kremikovtsi, Sofia – Site for waste treatment.
- GOODMILLS BULGARIA EOOD, Sofia – Production of flours and mill products.
- IPO OOD, Karlovo, machine-building plant, melting and casting of ferrous and non-ferrous metals.
- WIENERBERGER EOOD, Sofia – Ceramic plant for bricks production located in town of Lukovit.
- TRAKIA OIL AD, Stara Zagora – Plant for production of fresh vegetable oils, technical oils and biodiesel.
- SURPRISE OOD, Pleven – Installation for bio-diesel production.
- SVINECOMPLEX GOLYAMO VRANOVO INVEST AD, Russe district – Pig breeding farm.
- SVINECOMPLEX BRASHLEN AD, Russe – Pig breeding farm.
- SVIKOM AD, Sliven, Pig breeding farm.
- REPRODUCTOR PO SVINEVADSTVO AD, Yambol – Pig breeding farm and pig reproduction.
- BA GLASS BULGARIA EAD – Glass manufacturing plants in Sofia and Plovdiv.
- OBEROSTERREICHISCHE BIODIESEL BULGARIA EOOD – Production of biodiesel and glycerin.
- GLASS CONTRIBUTION EAD, Pleven – Glass manufacturing plant.
- ASTRA BIOPLANT EOOD, Marten – Enterprise for processing raw and Used Cooking Oils (UCO) and fats.
- ASTRA GREENPLANT EOOD, Slivo Pole – Biodiesel and glycerin production plant.
- TEGRA TERM EOOD – mathematical modelling.
- INSA SPIRIT AD, Belozem village, Rakovski municipality, Plovdiv district – Plant for ethanol production.
- SIGMAREF EOOD, Trud village, Plovdiv region – Production of refractory materials for the needs of the ceramic and glass industry.
- BRIKEL EAD – mathematical modelling for Thermal Power Plant .
- METAL IN EOOD, Plovdiv – Enterprises for the production of metal products, parts, and components and alkaline electrolytic galvanizing (galvanization of steel products).
- INDEX 11 AD - Installation for production of β-carotene by processing vegetable fats.
- EURO STEEL TRADE OOD, Kremikovtsi, Sofia – Site for waste treatment.
- HOLCIM BULGARIA AD – mathematical modelling with PLUME for Cement Plant, Beli Izvor village, Vratsa region.
- HOLCIM QUARRY MATERIALS PLOVDIV AD -– mathematical modelling for SHISHMANTSI-3 quarry and AHMATOVO quarry.
- MULTIVAC BULGARIA PRODUCTION EOOD – mathematical modelling, registration of installations carrying out activities related to the use of volatile organic compounds (VOCs).
