Business Mail Centre

I always think that there is only one mail centre in Bukit Raja handling mail from Petaling Jaya, Shah Alam, Puchong, Klang, Kuala Selangor etc. The cancellation from the mail centre reads as "Pusat Mel Bukit Raja", and there are at least three cancellation machines (sorting machines) to process the mail. Lately, however, I obtained a machine cancellation reads as "Pusat Bisnes Bukit Raja". I ain't quite sure if this "Pusat Bisnes Bukit Raja" is located within the "Pusat Mel Bukit Raja" or it is just another separate mail centre to handle specifically business mail. I have not seen other "Pusat Bisnes". If you have any other than "Pusat Busines Bukit Raja", please do let me know.