Manufacture of computer, electronic and optical products: highest revenue in Flemish Brabant
As of 13 Nov 2026, 20 companies in Manufacture of computer, electronic and optical products (NACE 26) in Flemish Brabant publish their revenue in recent accounts (financial years 2025 to 2026). The top 10 account for €434.6m, out of €465.9m for all of them; median revenue is €8.41m. Connect Group leads with €116.8m (financial year 2025).
Top 20 · Manufacture of computer, electronic and optical products · Flemish Brabant
Ranked by revenue published in the latest filed accounts (accounts less than 3 years old).
| # | Company | Total assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | Connect Group 1910 Kampenhout | €118.1m | €116.8m | €33.8m | 212.6 | 2025 |
| 2 | Hitachi Energy Belgium 1930 Zaventem | €187.2m | €112.2m | €31.4m | 276.1 | 2026 |
| 3 | Huawei Technologies Research & Development Belgium 3001 Leuven | €17.7m | €37.0m | €8.29m | 54.3 | 2025 |
| 4 | PITS 1731 Asse | €60.3m | €35.4m | €52.4m | 103.3 | 2025 |
| 5 | Kronos Systems 1731 Asse | €38.8m | €33.7m | €6.46m | 29.0 | 2025 |
| 6 | Danfoss 1702 Dilbeek | €7.83m | €29.4m | €1.15m | 33.0 | 2025 |
| 7 | Ekinops Belgium 3001 Leuven | €15.2m | €27.8m | €3.65m | 94.7 | 2025 |
| 8 | Demant Belgium 3001 Leuven | €8.81m | €17.3m | €1.06m | 9.5 | 2025 |
| 9 | C.N. Rood 1731 Asse | €4.98m | €16.1m | €2.13m | 20.1 | 2025 |
| 10 | Mirion Technologies (Canberra BNLS) 1731 Asse | €67.4m | €8.83m | €19.8m | 11.7 | 2025 |
| 11 | CCS Europe NV/SA 1600 Sint-Pieters-Leeuw | €4.12m | €8.00m | €2.89m | 8.7 | 2025 |
| 12 | Applied Materials Belgium 3001 Leuven | €8.84m | €7.33m | €4.56m | 22.0 | 2025 |
| 13 | ELO Touch Solutions (Belgium) 3110 Rotselaar | €4.63m | €6.30m | €3.10m | 27.3 | 2025 |
| 14 | Option 3001 Leuven | €9.33m | €3.69m | €1.38m | 16.0 | 2025 |
| 15 | Ateliers Radiomecaniques Belges 1701 Dilbeek | €3.11m | €3.16m | 645,054 € | 21.0 | 2026 |
| 16 | Sonova Consumer Hearing Belgium 1702 Dilbeek | €1.11m | €1.08m | 318,255 € | 9.2 | 2026 |
| 17 | MagCam 3001 Leuven | €1.38m | €1.08m | 945,364 € | 4.6 | 2025 |
| 18 | Horizon Components 1932 Zaventem | 583,198 € | 509,158 € | 15,948 € | — | 2025 |
| 19 | Telemeco 3001 Leuven | 394,236 € | 91,000 € | 367,404 € | 2.0 | 2025 |
| 20 | Dulouca 3053 Oud-Heverlee | 145,588 € | 36,979 € | 11,643 € | — | 2025 |
Ranking based on each company's own annual accounts (statutory, not consolidated): a subsidiary and its parent appear separately, and the ranking differs from lists based on consolidated group accounts. These are the revenue figures published in the annual accounts. Small companies (micro and abridged accounts) do not have to publish theirs: they do not appear in this ranking.
Manufacture of computer, electronic and optical products across Belgium → All sectors · Flemish Brabant →
Other sectors · Flemish Brabant
- 01 Crop and animal production, hunting and related service activities23
- 10 Manufacture of food products50
- 11 Manufacture of beverages16
- 16 Manufacture of wood and of products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials10
- 18 Printing and reproduction of recorded media13
- 20 Manufacture of chemicals and chemical products23
- 22 Manufacture of rubber and plastic products14
- 25 Manufacture of fabricated metal products, except machinery and equipment40
- 27 Manufacture of electrical equipment15
- 28 Manufacture of machinery and equipment n.e.c.23
- 32 Other manufacturing16
- 33 Repair, maintenance and installation of machinery and equipment31
- 35 Electricity, gas, steam and air conditioning supply17
- 38 Waste collection, recovery and disposal activities15
- 41 Construction of residential and non-residential buildings412
- 42 Civil engineering31
- 43 Specialised construction activities479
- 46 Wholesale trade589
- 47 Retail trade404
- 49 Land transport and transport via pipelines244
- 52 Warehousing, storage and support activities for transportation60
- 53 Postal and courier activities20
- 55 Accommodation13
- 56 Food and beverage service activities164
- 58 Publishing activities12
- 59 Motion picture, video and television programme production, sound recording and music publishing activities26
- 61 Telecommunication24
- 62 Computer programming, consultancy and related activities200
- 63 Computing infrastructure, data processing, hosting and other information service activities12
- 64 Financial service activities, except insurance and pension funding130
- 66 Activities auxiliary to financial services and insurance activities29
- 68 Real estate activities152
- 69 Legal and accounting activities78
- 70 Activities of head offices and management consultancy238
- 71 Architectural and engineering activities; technical testing and analysis71
- 73 Activities of advertising, market research and public relations79
- 74 Other professional, scientific and technical activities17
- 77 Rental and leasing activities43
- 78 Employment activities27
- 79 Travel agency, tour operator and other reservation service and related activities15
- 80 Investigation and security activities14
- 81 Services to buildings and landscape activities83
- 82 Office administrative, office support and other business support activities73
- 85 Education96
- 86 Human health activities99
- 87 Residential care activities65
- 88 Social work activities without accommodation54
- 90 Arts creation and performing arts activities59
- 93 Sports activities and amusement and recreation activities32
- 94 Activities of membership organisations40
- 95 Repair and maintenance of computers, personal and household goods, and motor vehicles and motorcycles50
- 96 Personal service activities84
Municipalities with the most companies in the sector · Flemish Brabant
- 3001 Leuven (Heverlee)18
- 1731 Asse (Relegem, Zellik)6
- 1930 Zaventem (Nossegem)6
- 3000 Leuven4
- 1702 Dilbeek (Groot-Bijgaarden)3
- 1840 Londerzeel (Malderen, Steenhuffel)3
- 1620 Drogenbos2
- 1745 Opwijk (Mazenzele)2
- 1790 Affligem (Essene, Hekelgem, Teralfene)2
- 1831 Machelen (Brab.) (Diegem)2
- 1850 Grimbergen2
- 1932 Zaventem (Sint-Stevens-Woluwe)2
Frequently asked questions
Which company in Manufacture of computer, electronic and optical products in Flemish Brabant has the highest revenue?
Connect Group, with €116.8m of published revenue (financial year 2025).
Why are some companies missing?
Small companies (micro and abridged accounts) do not have to publish their revenue: only the 20 that publish it, out of 97 companies in the sector in the area, are ranked.
Why does this ranking differ from other lists?
It uses each company's annual accounts as filed with the National Bank, not consolidated group accounts. A holding, a subsidiary or a purchasing entity can therefore appear separately. Only companies whose latest accounts are less than 3 years old are ranked.
Analyse companies · Flemish Brabant
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Open the full file →Active companies (legal entities) that have filed at least one set of annual accounts, based on the Crossroads Bank for Enterprises and the National Bank of Belgium. The sector is the main activity in the register; the municipality is that of the registered office. Data updated on 13 Nov 2026.