Sale to SEZ,EOU,Duty Exemption zone

Hi

I am configuring pricing procedure determination and Pricing procedure for following customers

How To Handel sale to

1) Customer lying in Special Excise Duty Exemption zone(customers are not applicable for Excise duty)

2)Export Oriented Units(EOU)(customers are not applicable for Excise duty)

3) Customer lying in SEZ(customers are not applicable for Excise duty & Taxes)

am i suppose to create different Distribution Channel so that it will pick up Pricing Procedure which will not have Excise duty conditions & Taxes?

Reg,

Antaa21