export purchase gst confusion

Harish vidha (3 Points)

06 January 2018  
hi
i want to purchase goods from a trader. and normally the gst is 12%
but i wanted to purchase for export so basically i need to know. what will the trader charge to me. either 12% or 0.1%
and if i pay 12% then how would i claim my refund at the time of export or after export.

thanks