Industries can be classified on the basis of the type of product they produce. The major types are:
Agro-based Industries:
These use agricultural raw materials.
\textit{Example:} Cotton textile, sugar, jute.
Mineral-based Industries:
These use mineral ores as raw materials.
\textit{Example:} Iron and steel, aluminium, cement.
Forest-based Industries:
These depend on forest produce.
\textit{Example:} Paper, furniture, plywood.
Animal-based Industries:
These use animal products as raw materials.
\textit{Example:} Leather, dairy, woolen textile.