How to start production in warehouse (like packing, sorting, finishing(cleaning),etc). What are the legal compliance to do so?

Dear all, I am working in plastic manufacturing company, we have 3+ warehouse in our near by location (our factory and warehouses are out of municipal corporation boundary) in Maharashtra.
We are planing to start some basic process (Production) in our warehouse (like packing, sorting, finishing(cleaning),etc). What are the legal compliance to do so?
Is there required any license, audit, etc for same. In addition we have MPCB Consent, and Town planing approval.
29th March 2019 From India, New Delhi

Dear friend,
Shops and Establishment Act is applicable to the warehouses whereas Factory Act is applicable where production activities take place. However, now you say that some of the production processes will be shifted to the warehouse. However, will these production processes remain within the purview of the shops and establishment act, or you need to convert shops and establishment license into the factory license that remains to be seen.
By chance if the labour inspector visits your warehouse and if he considers some of the activities as production activities and sends you the notice then proving that it is still warehouse will be a challenge. If you have a credible reply then you may go ahead and add a few value-adding activities to the warehouse.
Thanks,
Dinesh Divekar
29th March 2019 From India, Bangalore