Business Partner Restriction

Hi Expert,

My problem is that my client have three series for Supplier Business Partner :-

First one is Start with SUP, Second start  with EXP and Third start with TRN1 and CardType of all three series is Vendor.

I want to restrict visibility of EXP and TRN1 to user login id purch1, purch2 and store.

Is any store procedure or other possibility available ?, Please tell me.

Thanks & Regards,

Navanit