Processing of nuclear fuel

Companies (6) Ranking sector Top ranking Follow-up
1 Synatom 1000 BRUSSEL Sector ranking 17 GEL Top ranking 639 Follow-up
2 Brancaleoni Diffusion 4140 SPRIMONT Sector ranking 100 EXT Top ranking 145,013 Follow-up
3 Utema 6041 GOSSELIES Sector ranking 188 AIM Top ranking 40,006 Follow-up
4 FBFC International 1210 BRUSSEL Sector ranking 802 MEV Top ranking 55,164 Follow-up
5 RAD4MED.BE 1160 BRUSSEL Sector ranking No ranking GEL Top ranking No ranking Follow-up
6 Tommeleyn en Zonen 8920 LANGEMARK Sector ranking 413 GEL Top ranking 147,803 Follow-up

(*) This company is not ranked by turnover.
How are companies ranked?