On 23 April 1981 about 35 companies were established in Belgium.
0421.459.555
0421.460.347
0421.461.436
0421.461.733
0421.471.235
0421.473.512
0421.474.995
0421.475.094
0421.493.803
0421.509.639
0421.511.322
0421.570.413
0421.581.301
0421.594.464
0421.601.788
0421.608.718
0421.724.425
0421.815.881
0422.015.128
0422.084.612
0422.604.155
0658.131.835
0724.129.051
0739.273.325
0854.251.680
0857.486.730
0868.750.311