| 1 | ZES ZOLLNER ELECTRONIC SRL | Municipiul Satu Mare | Satu Mare | 2.3 bn | 2,231 |
| 2 | HONEYWELL LIFE SAFETY ROMANIA SRL | Municipiul Lugoj | Timiş | 678.5 m | 908 |
| 3 | COOPER INDUSTRIES ROMANIA SRL | Municipiul Arad | Arad | 530.0 m | 476 |
| 4 | DUCATI ENERGIA ROMANIA SA | Loc. Buşteni, Oraş Buşteni | Prahova | 381.4 m | 452 |
| 5 | WEIDMÜLLER INTERFACE ROMANIA SRL | Loc. Tăuţii-Măgherăuş, Oraş Tăuţii-Măgherăus | Maramureş | 365.5 m | 849 |
| 6 | PSICONTROL MECHATRONICS SRL | Bucureşti Sectorul 1 | Bucureşti | 290.7 m | 247 |
| 7 | KABLUTRONIK S.R.L. | Sat Ulmi, Comuna Ulmi | Dâmboviţa | 182.6 m | 541 |
| 8 | ISOVOLTA S.R.L. | Bucureşti Sectorul 3 | Bucureşti | 160.4 m | 300 |
| 9 | AQUIS SYSTEMS S.R.L. | Loc. Jimbolia, Oraş Jimbolia | Timiş | 148.9 m | 208 |
| 10 | MECATRONICS SA | Municipiul Alba Iulia | Alba | 102.5 m | 121 |
| 11 | SCHUNK CARBON TECHNOLOGY SRL | Bucureşti Sectorul 4 | Bucureşti | 100.9 m | 120 |
| 12 | CABLEX RBM S.R.L. | Municipiul Baia Mare | Maramureş | 76.7 m | 280 |
| 13 | POWER SPACE S.R.L. | Municipiul Ploieşti | Prahova | 43.5 m | 43 |
| 14 | ELECTROCERAMICA SA | Municipiul Turda | Cluj | 42.3 m | 90 |
| 15 | OXYHELP INDUSTRY SRL | Municipiul Ploieşti | Prahova | 35.1 m | 26 |
| 16 | BEESPEED AUTOMATIZARI SRL | Sat Chişoda, Comuna Giroc | Timiş | 31.6 m | 32 |
| 17 | RIELLO UPS ROMANIA SRL | Sat Dumbrăviţa, Comuna Dumbrăviţa | Timiş | 29.5 m | 20 |
| 18 | EMZ HANAUER ROMANIA S.R.L. | Bucureşti Sectorul 1 | Bucureşti | 28.6 m | 45 |
| 19 | AGRO ELECTROSISTEMS S.R.L. | Municipiul Sfântu Gheorghe | Covasna | 26.3 m | 23 |
| 20 | EUCHNER SRL | Loc. Cisnădie, Oraş Cisnădie | Sibiu | 24.6 m | 42 |
| 21 | ROB-SYSTEMS SRL | Municipiul Sibiu | Sibiu | 23.5 m | 61 |
| 22 | IPEE AMIRAL TRADING IMPEX SA | Municipiul Curtea de Argeş | Argeş | 20.7 m | 133 |
| 23 | VIMAR ROMANIA SRL | Municipiul Sibiu | Sibiu | 19.3 m | 14 |
| 24 | CRPOS SOLUTIONS S.R.L. | Sat Glimboca, Comuna Glimboca | Caraş-Severin | 18.9 m | 38 |
| 25 | ELECTRO PRO SOLUTIONS SRL | Sat Chiajna, Comuna Chiajna | Ilfov | 18.7 m | 13 |
| 26 | ACCESOR SRL | Bucureşti Sectorul 6 | Bucureşti | 16.2 m | 11 |
| 27 | SIRE SRL | Municipiul Arad | Arad | 9.7 m | 98 |
| 28 | EVGO GREEN MOTION SRL | Bucureşti Sectorul 3 | Bucureşti | 9.6 m | 7 |
| 29 | ANSTOSS ROMANIA SRL | Municipiul Urziceni | Ialomiţa | 8.0 m | 93 |
| 30 | BENATAV ROM SRL | Municipiul Fălticeni | Suceava | 6.9 m | 57 |
| 31 | PROJEKT ELECTRIK SRL | Municipiul Focşani | Vrancea | 6.8 m | 16 |
| 32 | BNC CABLURI SRL | Municipiul Suceava | Suceava | 6.7 m | 89 |
| 33 | E.E.TIM ECHIPAMENTE DE AUTOMATIZARE SA | Municipiul Timişoara | Timiş | 6.6 m | 22 |
| 34 | MAIRA MONTAJ SRL | Bucureşti Sectorul 1 | Bucureşti | 6.4 m | 29 |
| 35 | AZA AUTOMATION SRL | Sat Giroc, Comuna Giroc | Timiş | 6.3 m | 5 |
| 36 | ROMAGNETICS SRL | Sat Palota, Comuna Sântandrei | Bihor | 6.0 m | 24 |
| 37 | ASTI AUTOMATION SRL | Bucureşti Sectorul 6 | Bucureşti | 5.9 m | 12 |
| 38 | TETRONIC SRL | Sat Sîngeorgiu de Mureş, Comuna Sîngeorgiu de Mureş | Mureş | 5.8 m | 21 |
| 39 | ELECTROVALI SRL | Municipiul Zalău | Sălaj | 5.7 m | 19 |
| 40 | A.H.T. ADVANCED HEATING TECHNOLOGIES INDUSTRIAL GROUP SRL | Bucureşti Sectorul 4 | Bucureşti | 5.4 m | 11 |
| 41 | PAUL RAUSCHERT ROMANIA S.R.L. | Municipiul Hunedoara | Hunedoara | 5.3 m | 56 |
| 42 | SCHULTZ ELEKTROTECHNIK SRL | Loc. Tălmaciu, Oraş Tălmaciu | Sibiu | 5.2 m | 42 |
| 43 | KLF KABLLEX SRL | Municipiul Orăştie | Hunedoara | 4.6 m | 52 |
| 44 | MUNTENIA ELECTRO SRL | Municipiul Buzău | Buzău | 4.6 m | 5 |
| 45 | C.G.B. TELECOMSYSTEM SRL | Bucureşti Sectorul 5 | Bucureşti | 4.6 m | 72 |
| 46 | MANZ GALVANO TEC SRL | Bucureşti Sectorul 4 | Bucureşti | 4.3 m | 13 |
| 47 | SLIDE SRL | Loc. Bocşa, Oraş Bocşa | Caraş-Severin | 3.6 m | 24 |
| 48 | SIMETO CABLAJ SISTEMS S.R.L. | Sat Recea, Comuna Recea | Maramureş | 3.5 m | 32 |
| 49 | LIGHT BLUE ELECTRIC SRL | Bucureşti Sectorul 5 | Bucureşti | 3.5 m | 9 |
| 50 | BR ELECTRONIC SYSTEMS S.R.L. | Bucureşti Sectorul 1 | Bucureşti | 3.3 m | 44 |
| 51 | ARISTE RO S.R.L. | Sat Vlădeşti, Comuna Vlădeşti | Vâlcea | 3.3 m | 8 |
| 52 | B.L.C. COMPONENTS SRL | Sat Tigveni, Comuna Răteşti | Argeş | 3.3 m | 13 |
| 53 | GMC ENERGY ENGINEERING SRL | Sat Corbeanca, Comuna Corbeanca | Ilfov | 3.0 m | 2 |
| 54 | ELIND SRL | Municipiul Craiova | Dolj | 2.8 m | 11 |
| 55 | DIGITLINE AUTOMATIZARI SRL | Bucureşti Sectorul 1 | Bucureşti | 2.6 m | 1 |
| 56 | ITALTRONIC SRL | Loc. Şimleu Silvaniei, Oraş Şimleu Silvaniei | Sălaj | 2.6 m | 14 |
| 57 | SIMELCAB 2012 SRL | Sat Târnova, Comuna Târnova | Arad | 2.2 m | 27 |
| 58 | VIPEX PROD SRL | Bucureşti Sectorul 2 | Bucureşti | 2.0 m | 6 |
| 59 | LS ELECTRO SRL | Municipiul Cluj-Napoca | Cluj | 2.0 m | 11 |
| 60 | EVENT JUST SRL | Oraş Voluntari | Ilfov | 1.9 m | 2 |
| 61 | RORAS PREST SRL | Sat Barza, Comuna Budeşti | Vâlcea | 1.9 m | 4 |
| 62 | CALDOR HEAT & ENGINEERING S.R.L. | Loc. Buftea, Oraş Buftea | Ilfov | 1.6 m | 2 |
| 63 | CORES SRL | Sat Ghiroda, Comuna Ghiroda | Timiş | 1.5 m | 7 |
| 64 | HPC HIGH PRECISION CABLE HARNESSES S.R.L. | Sat Breasta, Comuna Breasta | Dolj | 1.5 m | 16 |
| 65 | TERNA POWER LINES S.R.L. | Bucureşti Sectorul 3 | Bucureşti | 1.4 m | 2 |
| 66 | GORKA VILLOR S.R.L. | Loc. Sânnicolau Mare, Oraş Sânnicolau Mare | Timiş | 1.4 m | 17 |
| 67 | DEHN ROMANIA S.R.L. | Sat Căteasca, Comuna Căteasca | Argeş | 1.3 m | 5 |
| 68 | EV EQUIPMENT S.R.L. | Bucureşti Sectorul 5 | Bucureşti | 1.2 m | 7 |
| 69 | FANINNOVATION SRL | Municipiul Cluj-Napoca | Cluj | 1.2 m | 1 |
| 70 | NUOVA ELETTRONICA SRL | Sat Vârsolţ, Comuna Vârşolţ | Sălaj | 1.1 m | 14 |
| 71 | MDM ELECTRONIC SRL | Bucureşti Sectorul 3 | Bucureşti | 1.1 m | 8 |
| 72 | RO ALPHA AUTOMATION SRL | Municipiul Piteşti | Argeş | 1.0 m | 4 |
| 73 | R-DVS EUROPE ENGINEERING S.R.L. | Loc. Bălan, Oraş Bălan | Harghita | 953 k | 2 |
| 74 | SPIACT GALATI S.A. | Municipiul Galaţi | Galaţi | 894 k | 5 |
| 75 | TRIPOL VOLT CONTROL S.R.L. | Municipiul Buzău | Buzău | 784 k | — |
| 76 | RADU WIRES&CABLES S.R.L. | Loc. Curtici, Oraş Curtici | Arad | 677 k | 3 |
| 77 | RAUL & KARINA SRL | Municipiul Arad | Arad | 629 k | 8 |
| 78 | BATA ROM SRL | Municipiul Târgu Mureş | Mureş | 575 k | 30 |
| 79 | GRADIENT SRL | Municipiul Iaşi | Iaşi | 545 k | 7 |
| 80 | LIGHTMASTER TECHNOLOGIES S.R.L. | Municipiul Craiova | Dolj | 500 k | 1 |
| 81 | SHOWFX PRODUCTION S.R.L. | Municipiul Marghita | Bihor | 478 k | 2 |
| 82 | EDS MASTER S.R.L. | Sat Văleni-Dâmboviţa, Comuna Văleni-Dâmboviţa | Dâmboviţa | 451 k | 2 |
| 83 | ASSEMBLA SRL | Municipiul Braşov | Braşov | 428 k | 1 |
| 84 | DAELCAB S.R.L. | Sat Târnova, Comuna Târnova | Arad | 382 k | 3 |
| 85 | ROMELECTRO PROD SRL | Municipiul Focşani | Vrancea | 337 k | 1 |
| 86 | CABLEEXPERT S.R.L. | Sat Călugăreni, Comuna Eremitu | Mureş | 311 k | 1 |
| 87 | ROFEP S.A. | Loc. Otopeni, Oraş Otopeni | Ilfov | 303 k | 1 |
| 88 | CYCLOMATIC S.R.L. | Sat Daia, Comuna Roşia | Sibiu | 280 k | 1 |
| 89 | CLIMACOOL SRL | Municipiul Cluj-Napoca | Cluj | 241 k | 1 |
| 90 | SMART AGRI SYSTEMS SRL | Sat Chişoda, Comuna Giroc | Timiş | 227 k | 1 |
| 91 | CREATIV PRINTERO S.R.L. | Sat Bârsăneşti, Comuna Bârsăneşti | Bacău | 197 k | 2 |
| 92 | CONCEPT STRATEGIC SERVICES SRL | Bucureşti Sectorul 6 | Bucureşti | 197 k | 2 |
| 93 | ELROTS S.R.L. | Bucureşti Sectorul 5 | Bucureşti | 193 k | 0 |
| 94 | SMART COMPONENTS S.R.L. | Municipiul Braşov | Braşov | 175 k | 1 |
| 95 | MERCUR CHIVU SNC | Municipiul Ploieşti | Prahova | 166 k | 1 |
| 96 | AUTOMATIZARI B V A S.R.L. | Municipiul Codlea | Braşov | 165 k | 0 |
| 97 | CORES ELECTRONIC SRL | Sat Ghiroda, Comuna Ghiroda | Timiş | 156 k | 1 |
| 98 | PERIMOT PREST SRL | Sat Ploieştiori, Comuna Blejoi | Prahova | 154 k | 1 |
| 99 | GÉMOSZ KFT VÁC SUCURSALA CRISTEȘTI | Sat Cristeşti, Comuna Cristeşti | Mureş | 150 k | 4 |
| 100 | MHT ELECTRIC DESIGN S.R.L. | Sat Lunca, Comuna Bujoreni | Vâlcea | 139 k | — |