| 1 | ELSACO ELECTRONIC SRL | Municipiul Botoşani | Botoşani | 91.5 m | 310 |
| 2 | I R I G C INTREPRINDEREA DE REPARATII SI INSTALATII GAZE SI CONSTRUCTII IMPEX SRL | Bucureşti Sectorul 1 | Bucureşti | 34.9 m | 243 |
| 3 | OCSA CONSTRUCTII SI INFRASTRUCTURA SRL | Bucureşti Sectorul 1 | Bucureşti | 31.0 m | 33 |
| 4 | TUBULAR TEHNO SISTEM SRL | Municipiul Timişoara | Timiş | 26.9 m | 54 |
| 5 | LEKO CONSTRUCT SRL | Municipiul Oradea | Bihor | 24.4 m | 91 |
| 6 | EUSKADI SRL | Municipiul Timişoara | Timiş | 23.0 m | 78 |
| 7 | INSTGAZ SRL | Sat Bărdeşti, Comuna Sântana de Mureş | Mureş | 20.3 m | 187 |
| 8 | AQUA SERV SRL | Municipiul Cluj-Napoca | Cluj | 19.3 m | 187 |
| 9 | ERBASU TOTAL CONSTRUCT SA | Bucureşti Sectorul 6 | Bucureşti | 18.4 m | 237 |
| 10 | ENERGOCONSTRUCT SRL | Sat Băcani, Comuna Băcani | Vaslui | 18.2 m | 150 |
| 11 | TERMOPRO EDIL SRL | Municipiul Oradea | Bihor | 16.1 m | 125 |
| 12 | INSPET SA | Municipiul Ploieşti | Prahova | 14.7 m | 210 |
| 13 | GAZPET INSTAL SRL | Municipiul Ploieşti | Prahova | 13.5 m | 106 |
| 14 | T.C.I.F. SA CRAIOVA | Municipiul Craiova | Dolj | 13.1 m | 16 |
| 15 | ACVATOT SRL | Bucureşti Sectorul 2 | Bucureşti | 12.5 m | 576 |
| 16 | SZABADICS ROMANIA S.R.L. | Municipiul Cluj-Napoca | Cluj | 11.3 m | 8 |
| 17 | GROUP CONSTRUCT BUCOVINA SRL | Loc. Plopeni, Oraş Salcea | Suceava | 11.0 m | 80 |
| 18 | ERBASU EDIL CONSTRUCT SA | Bucureşti Sectorul 6 | Bucureşti | 10.7 m | 254 |
| 19 | CIS GAZ SA | Comuna Sântana de Mureş | Mureş | 10.5 m | 212 |
| 20 | EXOTIC-PROD SRL | Municipiul Turnu Măgurele | Teleorman | 10.2 m | 8 |
| 21 | ANTOPREST ACTIV SRL | Bucureşti Sectorul 1 | Bucureşti | 9.7 m | 102 |
| 22 | PORT TRANS SRL | Sat Sălcuţa, Oraş Titu | Dâmboviţa | 8.8 m | 75 |
| 23 | HIDRONIC SRL | Sat Vâlcele, Comuna Feleacu | Cluj | 8.6 m | 55 |
| 24 | ZOCETOP S.R.L. | Municipiul Galaţi | Galaţi | 7.8 m | 4 |
| 25 | TEOVAL & CO. SRL | Loc. Târgu Frumos, Oraş Târgu Frumos | Iaşi | 7.6 m | 181 |
| 26 | TOP SCAV SRL | Municipiul Suceava | Suceava | 7.5 m | 82 |
| 27 | FLUID DEVELOPMENT SRL | Municipiul Constanţa | Constanţa | 7.1 m | 68 |
| 28 | ROSATT COMPANY SRL | Loc. Negreşti-Oaş, Oraş Negreşti-Oaş | Satu Mare | 7.0 m | 38 |
| 29 | ACETI SRL | Municipiul Slatina | Olt | 7.0 m | 77 |
| 30 | CONSCUT-CONSTRUCTII SRL | Bucureşti Sectorul 2 | Bucureşti | 7.0 m | 73 |
| 31 | RODIAN INVEST SRL | Sat Voiceşti, Comuna Voiceşti | Vâlcea | 6.9 m | — |
| 32 | MIHOC PRIMA SRL | Sat Crăieşti, Comuna Bozieni | Neamţ | 6.8 m | 55 |
| 33 | PREST-SERV-INSTAL SRL | Municipiul Slatina | Olt | 6.4 m | 16 |
| 34 | ASPROM S.R.L. | Bucureşti Sectorul 3 | Bucureşti | 6.4 m | 23 |
| 35 | AMBIENT CONSTRUCT SOLUTIONS SRL | Bucureşti Sectorul 4 | Bucureşti | 6.3 m | 47 |
| 36 | MBG AMBIENT STANDARD S.R.L. | Bucureşti Sectorul 2 | Bucureşti | 6.1 m | 35 |
| 37 | INSTALATII TRUST SA | Municipiul Braşov | Braşov | 6.0 m | 12 |
| 38 | NEW GRANDE CONSTRUCT S.R.L. | Sat Creţuleasca, Comuna Ştefăneştii de Jos | Ilfov | 6.0 m | 2 |
| 39 | ELCAS PRODIMPEX SRL | Municipiul Ploieşti | Prahova | 5.7 m | 44 |
| 40 | ROLENA SERV SRL | Sat Bunghi, Comuna Poienari | Neamţ | 5.3 m | 13 |
| 41 | CORDEP SRL | Sat Tămăşeni, Comuna Tămăşeni | Neamţ | 4.9 m | 24 |
| 42 | ROCO INSTAL COMUNAL S.R.L. | Bucureşti Sectorul 3 | Bucureşti | 4.5 m | 39 |
| 43 | KEVIEP EPITOIPARI ES KERESKEDELMI SRL DEBRECEN SUCURSALA ORADEA | Municipiul Oradea | Bihor | 4.5 m | 2 |
| 44 | AQUAEDUCT SRL | Municipiul Arad | Arad | 4.4 m | 39 |
| 45 | SAWMILL INTERNAŢIONAL SRL | Municipiul Tulcea | Tulcea | 4.4 m | 10 |
| 46 | MEDCONTROL GAZ SRL | Municipiul Medgidia | Constanţa | 4.3 m | 10 |
| 47 | COMPORSA SRL | Sat Giarmata-Vii, Comuna Ghiroda | Timiş | 4.1 m | 54 |
| 48 | INOVECO S.R.L. | Oraş Voluntari | Ilfov | 4.0 m | 215 |
| 49 | OMNI CONSTRUCT LOGISTIC SRL | Municipiul Constanţa | Constanţa | 3.9 m | 37 |
| 50 | CON BUCOVINA SA | Municipiul Suceava | Suceava | 3.7 m | 136 |
| 51 | DESIGN PROIECT SRL | Municipiul Iaşi | Iaşi | 3.7 m | 11 |
| 52 | CONSTRUCT NOVA SISTEMS SRL | Oraş Voluntari | Ilfov | 3.5 m | 8 |
| 53 | AQUA GETICA S.R.L. | Sat Ploieştiori, Comuna Blejoi | Prahova | 3.2 m | 47 |
| 54 | ACVAFOR PROIECT SRL | Municipiul Piteşti | Argeş | 3.2 m | 53 |
| 55 | APOPI&BLUMEN SRL | Sat Miroslava, Comuna Miroslava | Iaşi | 3.1 m | 8 |
| 56 | EUROPARTENER SRL | Sat Brătuleni, Comuna Miroslava | Iaşi | 3.0 m | 44 |
| 57 | M.G.M. CONSTRUCŢII GENERALE SRL | Municipiul Sibiu | Sibiu | 3.0 m | 12 |
| 58 | AQUA - MONTAJ SRL | Bucureşti Sectorul 6 | Bucureşti | 3.0 m | 10 |
| 59 | EPRS.RO SRL | Bucureşti Sectorul 3 | Bucureşti | 3.0 m | 33 |
| 60 | TRYADA TRANSGLOBAL SRL | Bucureşti Sectorul 5 | Bucureşti | 2.8 m | 56 |
| 61 | RIDEANK SRL | Municipiul Lugoj | Timiş | 2.6 m | 2 |
| 62 | NAB IMPORT EXPORT SRL | Bucureşti Sectorul 1 | Bucureşti | 2.6 m | 2 |
| 63 | CARPATIN PRESTCOM S.R.L. | Oraş Pantelimon | Ilfov | 2.6 m | 29 |
| 64 | BRU CONSTRUCT S.R.L. | Municipiul Arad | Arad | 2.6 m | 9 |
| 65 | RED TACTIC SRL | Sat Maieru, Comuna Maieru | Bistriţa-Năsăud | 2.6 m | 4 |
| 66 | VLAD INVEST SRL | Loc. Patârlagele, Oraş Patârlagele | Buzău | 2.5 m | 19 |
| 67 | RDC GENERAL CONTRACTOR SRL | Bucureşti Sectorul 2 | Bucureşti | 2.2 m | 86 |
| 68 | CADVYLL CONST SRL | Municipiul Bacău | Bacău | 2.2 m | 66 |
| 69 | TALPAC SRL | Municipiul Constanţa | Constanţa | 2.2 m | 66 |
| 70 | PLAST - EDILITARE SRL | Sat Dudoviceşti, Comuna Simnicu de Sus | Dolj | 2.1 m | 14 |
| 71 | PRONIGO TECHNOLOGY SRL | Sat Dârlos, Comuna Dârlos | Sibiu | 2.0 m | 9 |
| 72 | CONDMAX INSTAL S.R.L. | Municipiul Brăila | Brăila | 2.0 m | 7 |
| 73 | GEPROCON SA | Municipiul Iaşi | Iaşi | 1.9 m | 15 |
| 74 | DAV CIVIL ENGINEERING SRL | Loc. Videle, Oraş Videle | Teleorman | 1.9 m | 12 |
| 75 | HIDROTUB SRL | Bucureşti Sectorul 1 | Bucureşti | 1.9 m | 2 |
| 76 | PREPITECH SRL | Municipiul Sibiu | Sibiu | 1.9 m | 25 |
| 77 | VALOMAX TRANS 2014 SRL | Sat Deduleşti, Comuna Topliceni | Buzău | 1.8 m | 9 |
| 78 | CSS INOV S.R.L. | Municipiul Satu Mare | Satu Mare | 1.8 m | 25 |
| 79 | SZABADICS ÉPITŐIPARI ZÁRTKŐRŰEN MŰKŐDŐ RÉSZVÉNYTÁRSASÁG NAGYKANIZSA S.A. SUCURSALA SATU MARE | Municipiul Satu Mare | Satu Mare | 1.8 m | 0 |
| 80 | VAST IMPEX SRL | Municipiul Constanţa | Constanţa | 1.8 m | 20 |
| 81 | ACTIV INFRASTRUCTURA BM S.R.L. | Municipiul Târgovişte | Dâmboviţa | 1.7 m | 1 |
| 82 | ATHOS DESIGN & BUILD GROUP S.R.L. | Bucureşti Sectorul 5 | Bucureşti | 1.7 m | 15 |
| 83 | ROCONIS TRANS CONSTRUCT SRL | Municipiul Craiova | Dolj | 1.7 m | 0 |
| 84 | BEN'S PRO CONSTRUCTIONS S.R.L. | Oraş Bucecea | Botoşani | 1.7 m | 5 |
| 85 | A&I PROUD CONSTRUCT SRL | Sat Şimian, Comuna Şimian | Mehedinţi | 1.7 m | 5 |
| 86 | TXC-GCA INSTAL S.R.L. | Loc. Sânnicolau Mare, Oraş Sânnicolau Mare | Timiş | 1.7 m | 9 |
| 87 | KATO GROUP SRL | Sat Ploieştiori, Comuna Blejoi | Prahova | 1.6 m | 51 |
| 88 | EAST POINT ENERGY S.R.L. | Oraş Otopeni | Ilfov | 1.6 m | 8 |
| 89 | LIATI CONSTRUCT IMPEX SRL | Sat Şimian, Comuna Şimian | Mehedinţi | 1.6 m | 68 |
| 90 | ABSOLUT 2001 SRL | Sat Giarmata, Comuna Giarmata | Timiş | 1.6 m | 14 |
| 91 | GEIZER MARIO SRL | Municipiul Slatina | Olt | 1.6 m | 6 |
| 92 | PROTECNO SRL MONDOLFO SUCURSALA CLUJ NAPOCA | Municipiul Cluj-Napoca | Cluj | 1.6 m | — |
| 93 | AEDO TECHNOLOGIES S.R.L. | Oraş Măgurele | Ilfov | 1.6 m | 27 |
| 94 | TELETIN CONSTRUCTION S.R.L. | Sat Biceştii de Sus, Comuna Dumitreşti | Vrancea | 1.6 m | 10 |
| 95 | APICELLA ALBA S.R.L. | Bucureşti Sectorul 5 | Bucureşti | 1.5 m | 15 |
| 96 | HENAROX INSTAL S.R.L. | Municipiul Târgu Mureş | Mureş | 1.5 m | 10 |
| 97 | MIRAL INSTAL COMPANY SRL | Bucureşti Sectorul 3 | Bucureşti | 1.5 m | 97 |
| 98 | NEMEVAL INSTAL SRL | Municipiul Arad | Arad | 1.5 m | 11 |
| 99 | PAMAVI HOUSE INSTAL S.R.L. | Sat Zimandu Nou, Comuna Zimandu Nou | Arad | 1.5 m | 28 |
| 100 | EUROMEGA CONSTRUCT INSTAL AG SRL | Sat Geamăna, Comuna Bradu | Argeş | 1.5 m | 9 |