Manali Petrochemicals stock gains 9% on Tamil Nadu Pollution Control nod Posted on July 29, 2016 by Deep ALSO READ: Here is why Dr Reddy’s shares tanked 13 per cent in two days “With the TNPCB nod, now the utilization of the plants is being restored to the earlier levels,” said the company in a filing to BSE.Read More Manali Petrochemicals stock gains 9% on Tamil Nadu Pollution Control nod