ampoule sealer & melting and ampoule sealing machine 

The table spins, set flame height at just below top, turn the table speed up and itll seal itself

Cost and whose supply in India

so it is basically a blow torch

Do not leak test with flame. That is wrong way of doing it. Leak test with soap water.

I want to buy this device, how can I buy it, and where

اين يمكننى شراء واحده كهذه

You seem don't know how to operate it though.. Very dangerous when you try to adjust the height with the torch running.. I dont think its safe either to hold the ampoule with bare hands.. There should be more safety mechanisms while maintaining maneuverability if this thing is to be handled manually..