Hi-Green Carbon Ltd – Play on Renewable energy endeavoring wealth from waste

Company seems to be good, high TAM, no close national competitors. However, I had three questions-

1. Since the company manufacturers Recovered carbon black (rCB), which is essentially a commodity business, how does it compare in price to virgin carbon black ( the product the company is trying to replace) ?
2. What are the import risks the company faces and how is it mitigating that >
3. As the Capex is only 40-50 crore for a new plant, what is stopping a big player to enter the market and start a backward integrated plant ?
   Disc: Not invested, but looking to enter.