Mou with manufacturer

Hello everyone

This is ramakrishnan , I own a trading / Export company (B in my case).

I have got an order from a Company C(foreign company which is registered in India).I have to buy a product from the manufacturer  (A) and sell the same to the Company C.

In this A to B to C transaction, I have sales tax issue so my questions are

1) can I sign a Mou with the manufacturer to elimate these sales / Vat taxes.

2) or if I lease a manufacturing plant , It would be B To C which would be a solution ?

Note : Company C exports the product they buy from us (B)

Waiting for ur replies 

thanks