On 8 April 1977 about 22 companies were established in Belgium.
0417.020.222
0417.020.321
0417.020.420
0417.046.649
0417.056.547
0417.081.885
0417.081.984
0417.110.985
0417.220.754
0566.741.504
0611.520.068
0668.030.882
0691.030.671
0692.241.092
0741.013.187
0742.022.878
0857.062.306
0857.070.323
0858.685.966
0858.686.065
0868.517.412