Manufacture of computer, electronic and optical products: highest revenue in Walloon Brabant
As of 14 Nov 2026, 10 companies in Manufacture of computer, electronic and optical products (NACE 26) in Walloon Brabant publish their revenue in recent accounts (financial years 2024 to 2026). The top 10 account for €527.9m, out of €527.9m for all of them; median revenue is €10.2m. Ion Beam Applications leads with €439.7m (financial year 2025).
Top 10 · Manufacture of computer, electronic and optical products · Walloon Brabant
Ranked by revenue published in the latest filed accounts (accounts less than 3 years old).
| # | Company | Total assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | Ion Beam Applications 1348 Ottignies-Louvain-la-Neuve | €709.9m | €439.7m | €195.5m | 1,010.3 | 2025 |
| 2 | HMS Industrial Networks 1400 Nivelles | €9.72m | €24.0m | €5.10m | 71.2 | 2025 |
| 3 | SEE Telecom 1401 Nivelles | €12.7m | €16.8m | €2.96m | 38.4 | 2024 |
| 4 | JEMA 1348 Ottignies-Louvain-la-Neuve | €11.2m | €15.7m | €4.26m | 50.4 | 2025 |
| 5 | Integrated Solutions Enterprise Europe 1410 Waterloo | €8.90m | €12.4m | €7.75m | 2.1 | 2025 |
| 6 | ME Group Belgium 1480 Tubize | €7.80m | €7.99m | €2.96m | 18.8 | 2024 |
| 7 | intoPIX 1348 Ottignies-Louvain-la-Neuve | €15.7m | €6.26m | €10.2m | 38.0 | 2026 |
| 8 | Euro Heat Pipes 1400 Nivelles | €18.5m | €4.67m | 962,421 € | 89.5 | 2025 |
| 9 | MBH, Manufacture Belge d’Horlogerie 1390 Grez-Doiceau | 151,340 € | 168,217 € | 24,532 € | — | 2025 |
| 10 | Watch-Maker 1360 Perwez | 104,480 € | 141,221 € | 35,087 € | — | 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 · Walloon Brabant →
Other sectors · Walloon Brabant
- 01 Crop and animal production, hunting and related service activities22
- 10 Manufacture of food products17
- 18 Printing and reproduction of recorded media11
- 21 Manufacture of basic pharmaceutical products and pharmaceutical preparations12
- 23 Manufacture of other non-metallic mineral products13
- 25 Manufacture of fabricated metal products, except machinery and equipment15
- 28 Manufacture of machinery and equipment n.e.c.20
- 41 Construction of residential and non-residential buildings44
- 43 Specialised construction activities152
- 46 Wholesale trade220
- 47 Retail trade191
- 49 Land transport and transport via pipelines37
- 52 Warehousing, storage and support activities for transportation14
- 55 Accommodation10
- 56 Food and beverage service activities85
- 58 Publishing activities12
- 59 Motion picture, video and television programme production, sound recording and music publishing activities14
- 62 Computer programming, consultancy and related activities101
- 64 Financial service activities, except insurance and pension funding55
- 66 Activities auxiliary to financial services and insurance activities19
- 68 Real estate activities170
- 69 Legal and accounting activities46
- 70 Activities of head offices and management consultancy156
- 71 Architectural and engineering activities; technical testing and analysis52
- 73 Activities of advertising, market research and public relations31
- 74 Other professional, scientific and technical activities24
- 81 Services to buildings and landscape activities31
- 82 Office administrative, office support and other business support activities44
- 85 Education40
- 86 Human health activities79
- 87 Residential care activities21
- 88 Social work activities without accommodation26
- 90 Arts creation and performing arts activities14
- 93 Sports activities and amusement and recreation activities23
- 94 Activities of membership organisations13
- 95 Repair and maintenance of computers, personal and household goods, and motor vehicles and motorcycles18
- 96 Personal service activities30
Municipalities with the most companies in the sector · Walloon Brabant
- 1348 Ottignies-Louvain-la-Neuve (Louvain-La-Neuve)12
- 1410 Waterloo8
- 1400 Nivelles (Monstreux)7
- 1300 Wavre (Limal)5
- 1420 Braine-l'Alleud5
- 1435 Mont-Saint-Guibert (Corbais, Hévillers)4
- 1370 Jodoigne (Dongelberg, Jauchelette, Jodoigne-Souveraine, …)3
- 1380 Lasne (Couture-Saint-Germain, Lasne-Chapelle-Saint-Lambert, Maransart, …)3
- 1390 Grez-Doiceau (Archennes, Biez, Bossut-Gottechain, …)3
- 1490 Court-Saint-Étienne3
- 1360 Perwez (Malèves-Sainte-Marie-Wastines, Orbais, Thorembais-Les-Béguines, …)2
- 1480 Tubize (Clabecq, Oisquercq, Saintes)2
Frequently asked questions
Which company in Manufacture of computer, electronic and optical products in Walloon Brabant has the highest revenue?
Ion Beam Applications, with €439.7m 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 10 that publish it, out of 67 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 · Walloon 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 14 Nov 2026.