62 companies with NACE 3831 - in Bucuresti 33 companies with NACE 3831 - in Ilfov 30 companies with NACE 3831 - in Constanta 29 companies with NACE 3831 - in Arges 28 companies with NACE 3831 - in Bacau 28 companies with NACE 3831 - in Cluj 26 companies with NACE 3831 - in Suceava 24 companies with NACE 3831 - in Dolj 23 companies with NACE 3831 - in Mures 21 companies with NACE 3831 - in Iasi 21 companies with NACE 3831 - in Maramures 21 companies with NACE 3831 - in Bihor 20 companies with NACE 3831 - in Hunedoara 19 companies with NACE 3831 - in Prahova 19 companies with NACE 3831 - in Arad 16 companies with NACE 3831 - in Neamt 16 companies with NACE 3831 - in Timis 15 companies with NACE 3831 - in Salaj 15 companies with NACE 3831 - in Calarasi 14 companies with NACE 3831 - in Gorj 14 companies with NACE 3831 - in Dambovita 12 companies with NACE 3831 - in Valcea 12 companies with NACE 3831 - in Caras-severin 10 companies with NACE 3831 - in Buzau 10 companies with NACE 3831 - in Satu mare 9 companies with NACE 3831 - in Botosani 9 companies with NACE 3831 - in Vaslui 8 companies with NACE 3831 - in Giurgiu 8 companies with NACE 3831 - in Galati 8 companies with NACE 3831 - in Olt 7 companies with NACE 3831 - in Mehedinti 7 companies with NACE 3831 - in Braila 7 companies with NACE 3831 - in Vrancea 7 companies with NACE 3831 - in Brasov 7 companies with NACE 3831 - in Bistrita-nasaud 7 companies with NACE 3831 - in Alba 6 companies with NACE 3831 - in Sibiu 6 companies with NACE 3831 - in Ialomita 6 companies with NACE 3831 - in Teleorman 5 companies with NACE 3831 - in Covasna 3 companies with NACE 3831 - in Tulcea 2 companies with NACE 3831 - in Harghita