I want to show pdf from certain page to certain page not whole pdf.

Dear user, if you're still not able to solve your issue it's clear that you should hire us for direct support of custom development.
Please, follow this link: sites.fastspring.com/gearit/product/pdfsup?member=new&tags=2mnt

I really hope that you will be able to follow the last instruction from my colleague and apply them to your code.

Dario
from sales team