Need information - coir, oil extraction, plates, banana fibre

Hi,
I’m a new member to this forum,I need sum information & advice from senior members regarding ,
1.Coir industry(Present status,cost of machinary for fibre extraction & cost of machinary for making products with extracted fibre,marketing,etc.)
2.Oil extraction from cotton seed industry(Present status,cost of machinary ,marketing,etc.)
3.Plate making from areca leaf industry(Present status,cost of machinary ,marketing,etc.)
4.Banana fibre making industry(Present status,cost of machinary ,marketing,etc.)
which will be the best of these, any other small scall bussiness related to agricultural waste product making.
Ur suggestions will be valuble for me.
regards,
rajesh.