According to UrbIS, the address of this building is correct.

bu_id 	7622902
adpt_adrn 	15
pn_name_dut 	Ontwikkelingsstraat
pn_name_fre 	Rue du Développement 
pz_national_code 	1070
mu_inspire_id 	BE.BRUSSELS.BRIC.ADM.MU.81
mu_name_dut 	Anderlecht
mu_name_fre 	Anderlecht

UrbIS does not have an entry for Boulevard Industriel - Industrielaan 15

It looks like one more occurrence of a business putting incorrect data on its website.  Often because the person who writes the website is not the same as the real owner who should know the real address in the official papers or tax forms.