This will be risk in this business (short term / long term). But if company is listed since 1992 doing same thing for so many years now, and Modi's Make in India is to happen - then I dont see closure of business. There can b closure of factory in worst case and Shree Hari can move to Gujarat state - mai baap for all factories to b opened (may chemical factories in Vapi (Gujarat) ).
Buffet - "Buying the stock at that price was like picking up a discarded cigar butt that had one puff remaining in it but available at free of cost" for Shree Hari
But also true is - (not for Shree Hari) - "Buying quality business at fair price is far better than buying average business at discounted price" for Kaveri Seeds / NMDC / GMDC / Vardhman Acrylics