Medical, precision and optical instruments
102 companies listed in Korea file under this classification. Figures below are each company's most recent filed year, mostly 2025.
Companies102
Combined revenueKRW 9,748bn
Median revenueKRW 46bn
Largest company's share8.2%
We show the median rather than the average because one company often carries a whole classification. The largest firm's share of combined revenue is there so you can see when that is happening.
All companies, by name
Listed alphabetically, not ranked. We do not order companies by size or call any of them leading, major or top.
| Company | Market | Year | Revenue | Operating profit | Net profit |
|---|---|---|---|---|---|
| 3S KOREA CO., LTD060310 | KOSDAQ | 2025 | 29 | -6 | -10 |
| Aligned Genetics, Inc.238120 | KOSDAQ | 2025 | 16 | 2 | 3 |
| Alpha AI Co.,Ltd.043100 | KOSDAQ | 2025 | 17 | -6 | -6 |
| ASTERASYS Co., Ltd.450950 | KOSDAQ | 2025 | 38 | 10 | 9 |
| BIODYNE CO., LTD.314930 | KOSDAQ | 2025 | 7 | 1 | 1 |
| Bistos Co., Ltd.419540 | KOSDAQ | 2025 | 17 | -1 | -1 |
| BTB Korea Co.,Ltd219750 | KOSDAQ | 2025 | — | — | — |
| CG MedTech Co.,Ltd.056090 | KOSDAQ | 2025 | 47 | 4 | 7 |
| CLASSYS Inc.214150 | KOSDAQ | 2025 | 337 | 171 | 132 |
| CoAsia CM Co.,Ltd196450 | KOSDAQ | 2025 | 258 | 5 | 3 |
| Corentec Co., Ltd.104540 | KOSDAQ | 2025 | 100 | 9 | 7 |
| COXEM CO., LTD360350 | KOSDAQ | 2025 | 13 | -2 | -1 |
| CU MEDICAL SYSTEMS Inc.115480 | KOSDAQ | 2025 | 48 | 11 | 1 |
| Curiosis Inc.494120 | KOSDAQ | 2025 | 7 | -8 | -8 |
| Curiox Biosystems Co., Ltd.445680 | KOSDAQ | 2025 | 5 | -12 | -27 |
| DENTIS CO.,LTD261200 | KOSDAQ | 2025 | 114 | -10 | -16 |
| DENTIUM145720 | KOSPI | 2025 | 346 | 64 | 16 |
| DI CORPORATION003160 | KOSPI | 2025 | 432 | 37 | 14 |
| DIO Corporation039840 | KOSDAQ | 2025 | 164 | 10 | -1 |
| DongBang Medical Co., Ltd.240550 | KOSDAQ | 2025 | 114 | 17 | 11 |
| DRGEM CORPORATION263690 | KOSDAQ | 2025 | 103 | 9 | 7 |
| DRTECH Corporation214680 | KOSDAQ | 2025 | 116 | -14 | -24 |
| Dynamic solution Co.,Ltd.290660 | KOSDAQ | 2025 | 16 | -3 | -12 |
| ELC Co., Ltd.041520 | KOSDAQ | 2025 | 38 | -1 | 8 |
| ELP Corp.063760 | KOSDAQ | 2025 | 27 | 2 | 3 |
| EOFlow Co., Ltd.294090 | KOSDAQ | 2025 | 4 | -22 | -42 |
| FIBERPRO, Inc.368770 | KOSDAQ | 2025 | 43 | 10 | 9 |
| Finemedix Co., Ltd.387570 | KOSDAQ | 2025 | 10 | -3 | -2 |
| Furonteer Inc.370090 | KOSDAQ | 2025 | 12 | -7 | -6 |
| Genesystem Co., Ltd363250 | KOSDAQ | 2025 | 0 | — | -15 |
| GENORAY Co., LTD.122310 | KOSDAQ | 2025 | 108 | -0 | 1 |
| GITSN, Inc.446840 | KOSDAQ | 2025 | 11 | -7 | -11 |
| Haesung Optics Co.,Ltd076610 | KOSDAQ | 2025 | 160 | -7 | -13 |
| Hancom Lifecare Inc.372910 | KOSPI | 2025 | 92 | -1 | -8 |
| Hironic Co.,Ltd149980 | KOSDAQ | 2025 | 32 | 4 | 3 |
| Huvitz Co., Ltd.065510 | KOSDAQ | 2025 | 118 | 6 | -5 |
| HyVISION SYSTEM.INC126700 | KOSDAQ | 2025 | 171 | -33 | -24 |
| i-SENS, Inc.099190 | KOSDAQ | 2025 | 315 | 8 | -7 |
| InBody Co., Ltd.041830 | KOSDAQ | 2025 | 234 | 37 | 30 |
| INTEROJO CO. LTD.119610 | KOSDAQ | 2025 | 118 | 19 | 13 |
| IVIM Technology, Inc.460470 | KOSDAQ | 2025 | 4 | -4 | -4 |
| JAEYOUNG SOLUTEC CO.,LTD.049630 | KOSDAQ | 2025 | 165 | 11 | 8 |
| KC CO., LTD.029460 | KOSPI | 2025 | 797 | 46 | 50 |
| KCTECH CO., LTD281820 | KOSPI | 2025 | 383 | 60 | 53 |
| KNR SYSTEMS Inc.199430 | KOSDAQ | 2025 | 16 | -8 | -8 |
| KOMELON CORPORATION049430 | KOSDAQ | 2025 | 72 | 18 | 23 |
| L&K BIOMED CO., LTD.156100 | KOSDAQ | 2025 | 39 | 1 | -17 |
| LAMEDITECH Co., Ltd.462510 | KOSDAQ | 2025 | 7 | -12 | -11 |
| Laseroptek Co., Ltd.199550 | KOSDAQ | 2025 | 26 | -12 | -11 |
| LivsMed Inc.491000 | KOSDAQ | 2025 | 51 | -23 | -23 |
| LK SAMYANG CO., LTD225190 | KOSDAQ | 2025 | 21 | -17 | -19 |
| MEDIANA Co.,LTD041920 | KOSDAQ | 2025 | 65 | 6 | 5 |
| MEKICS Co., Ltd058110 | KOSDAQ | 2025 | 11 | -3 | -3 |
| Micro Digital Co., Ltd.305090 | KOSDAQ | 2025 | 13 | -9 | -13 |
| Mintech Co., Ltd.452200 | KOSDAQ | 2025 | 21 | -9 | -3 |
| MIRAE CORPORATION025560 | KOSPI | 2025 | 51 | 9 | 10 |
| MITECH CO.,LTD.179290 | KOSDAQ | 2025 | 67 | 21 | 20 |
| MX On CORPORATION347890 | KOSDAQ | 2025 | 62 | -6 | -3 |
| NanoenTek,Inc.039860 | KOSDAQ | 2025 | 38 | 1 | 2 |
| NEXTBIOMEDICAL Co., Ltd.389650 | KOSDAQ | 2025 | 16 | -1 | -0 |
| NextEye Co., Ltd.137940 | KOSDAQ | 2025 | 120 | -36 | -41 |
| Noul Co., Ltd.376930 | KOSDAQ | 2025 | 5 | -20 | -20 |
| OmnisystemCo.,Ltd057540 | KOSDAQ | 2025 | 99 | 1 | -0 |
| OPTRONTEC Inc.082210 | KOSDAQ | 2025 | 196 | -3 | -22 |
| OSANG HEALTHCARE CO.,LTD.036220 | KOSDAQ | 2025 | 129 | 2 | 3 |
| OSTEONIC Co., Ltd.226400 | KOSDAQ | 2025 | 45 | 9 | 7 |
| P&S Robotics Co., Ltd.460940 | KOSDAQ | 2025 | 8 | 1 | 3 |
| Park Systems Corp.140860 | KOSDAQ | 2025 | 206 | 42 | 34 |
| PJ ELECTRONICS CO., LTD.006140 | KOSDAQ | 2025 | 179 | 11 | 9 |
| Plasmapp Co., Ltd.405000 | KOSDAQ | 2025 | 8 | -8 | -7 |
| Precision Biosensor Inc.335810 | KOSDAQ | 2025 | 20 | -5 | -10 |
| Protec Mems Technology Inc.147760 | KOSDAQ | 2025 | 25 | -20 | -22 |
| PROTIA INC.303360 | KOSDAQ | 2025 | 15 | 4 | 4 |
| PS Tec. Co., Ltd.002230 | KOSDAQ | 2025 | 97 | 5 | 9 |
| QuantaMatrix Incorporated317690 | KOSDAQ | 2025 | 4 | -16 | -19 |
| Ray Co., Ltd.228670 | KOSDAQ | 2025 | 111 | -10 | 0 |
| RAYENCE CO.,LTD.228850 | KOSDAQ | 2025 | 115 | -4 | -5 |
| RecensMedical, Inc.394420 | KOSDAQ | 2025 | 9 | -11 | -19 |
| REMED CO.,LTD.302550 | KOSDAQ | 2025 | 25 | 1 | -0 |
| RollingStone Co., Ltd.214610 | KOSDAQ | 2025 | 11 | -10 | -24 |
| SD BIOSENSOR INC.137310 | KOSPI | 2025 | — | — | — |
| SEERS Co., Ltd.458870 | KOSDAQ | 2025 | 48 | 16 | 16 |
| SEJONG MEDICAL Co.Ltd.,258830 | KOSDAQ | 2025 | 19 | 2 | -0 |
| SEKONIX CO., LTD.053450 | KOSDAQ | 2025 | 435 | 3 | 5 |
| SELVAS Healthcare, Inc.208370 | KOSDAQ | 2025 | 31 | -0 | 4 |
| SENKO Co.,Ltd.347000 | KOSDAQ | 2025 | 37 | 3 | 5 |
| SGHEALTHCARE CO.,LTD.398120 | KOSDAQ | 2025 | 25 | 1 | 1 |
| Smart Radar System, Inc.424960 | KOSDAQ | 2025 | 9 | -5 | -3 |
| SolDefense Co., Ltd.215090 | KOSDAQ | 2025 | 27 | 1 | 3 |
| SOS LAB Co., Ltd.464080 | KOSDAQ | 2025 | 6 | -16 | -18 |
| Synergy Innovation Co., Ltd.048870 | KOSDAQ | 2025 | 113 | 19 | 11 |
| SystemandApplicationTechnologiesInc.060540 | KOSDAQ | 2025 | 160 | 4 | 0 |
| SYSWORK CO., LTD269620 | KOSDAQ | 2025 | 11 | -3 | -5 |
| Tomocube, Inc.475960 | KOSDAQ | 2025 | 11 | -6 | -5 |
| TSE CO.,Ltd131290 | KOSDAQ | 2025 | 429 | 49 | 40 |
| ValueAddedTechnologyCo.,Ltd.043150 | KOSDAQ | 2025 | 426 | 55 | 39 |
| VICTEK. Co., Ltd.065450 | KOSDAQ | 2025 | 83 | 4 | 4 |
| Vieworks Co., Ltd.100120 | KOSDAQ | 2025 | 239 | 21 | 21 |
| WaveElectronicsCo.,Ltd.095270 | KOSDAQ | 2025 | 81 | -2 | 1 |
| WITHTECH, Inc.348350 | KOSDAQ | 2025 | 58 | 5 | 6 |
| WON TECH CO.,Ltd.336570 | KOSDAQ | 2025 | 157 | 52 | 35 |
| WOOJIN INC105840 | KOSPI | 2025 | 150 | 14 | 11 |