On 31 December 1973 about 21 companies were established in Belgium.
0413.698.565
0413.759.834
0413.792.397
0413.792.496
0413.792.595
0413.830.605
0413.831.989
0413.832.979
0413.848.916
0413.849.708
0413.851.785
0413.897.713
0413.935.721
0413.937.008
0413.938.194
0414.014.014
0414.272.449
0414.272.548
0413.826.051
0413.811.502
0413.917.410