Would like to know more investment castings companies from india. I found one
investment castings companies.
Would also like to know the difference between investment castings and low wax castings.
That's LOST wax casting, and it's the same thing as investment casting. The process involves pouring Investment grade plaster (super fine consistency and very high temperature rating) around wax objects; then melting or "burning out" the wax and pouring metal into the resulting cavity.
Don't know about Indian firms doing this. You should be able to find them through a web search.