63 companies with NACE 3831 - in Bucuresti 33 companies with NACE 3831 - in Ilfov 31 companies with NACE 3831 - in Constanta 30 companies with NACE 3831 - in Arges 29 companies with NACE 3831 - in Cluj 28 companies with NACE 3831 - in Bacau 27 companies with NACE 3831 - in Suceava 24 companies with NACE 3831 - in Dolj 23 companies with NACE 3831 - in Mures 22 companies with NACE 3831 - in Bihor 22 companies with NACE 3831 - in Iasi 21 companies with NACE 3831 - in Maramures 20 companies with NACE 3831 - in Hunedoara 20 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 Calarasi 16 companies with NACE 3831 - in Timis 15 companies with NACE 3831 - in Salaj 14 companies with NACE 3831 - in Dambovita 14 companies with NACE 3831 - in Gorj 12 companies with NACE 3831 - in Caras-severin 12 companies with NACE 3831 - in Valcea 10 companies with NACE 3831 - in Buzau 10 companies with NACE 3831 - in Vaslui 10 companies with NACE 3831 - in Satu mare 9 companies with NACE 3831 - in Botosani 8 companies with NACE 3831 - in Giurgiu 8 companies with NACE 3831 - in Bistrita-nasaud 8 companies with NACE 3831 - in Galati 8 companies with NACE 3831 - in Olt 7 companies with NACE 3831 - in Brasov 7 companies with NACE 3831 - in Braila 7 companies with NACE 3831 - in Vrancea 7 companies with NACE 3831 - in Mehedinti 7 companies with NACE 3831 - in Alba 6 companies with NACE 3831 - in Sibiu 6 companies with NACE 3831 - in Teleorman 6 companies with NACE 3831 - in Ialomita 4 companies with NACE 3831 - in Covasna 3 companies with NACE 3831 - in Tulcea 2 companies with NACE 3831 - in Harghita