This is very useful for my understanding. Thank you. As a side note, where did you get the caustic soda lye price from (a quick Google search did not yield any good source). More generally, do you know a good source for checking prices of various chemicals in India?
Finally, you seem to have a good understanding of (subsectors of) the chemical industry in India. I created a general thread aimed at understanding the chemical sector in India. Invite you contribute your thoughts/resources on that thread also.