What is manufacturing? How does manufacturing lead to value addition

What is manufacturing? How does manufacturing lead to value addition of the raw material? Explain with the help of examples.

Production of goods in large quantities by processing to raw materials to more valuable products is called manufacturing.
(i) People employed in the secondary activities manufacture the primary materials into finished goods.
(ii) For example, paper is manufactured from wood, sugar from sugarcane, iron and steel from iron ore, aluminium from bauxite, etc. Thus, raw materials are transformed into a wide variety of finished goods of higher value.