On 21 April 1981 about 38 companies were established in Belgium.
0421.452.924
0421.475.193
0421.482.618
0421.502.315
0421.510.530
0421.510.926
0421.514.191
0421.518.844
0421.519.042
0421.519.735
0421.520.428
0421.585.655
0421.593.870
0421.681.665
0421.778.170
0421.848.149
0421.895.956
0421.908.329
0421.909.616
0421.913.871
0421.919.910
0422.017.306
0515.950.918
0527.674.555
0544.672.420
0602.964.569
0619.855.437
0628.190.113
0655.181.550