Every country needs exploring of coal, iron and steel, exploring of oil and its purification, heavy machineries, heavy electrical equipments, heavy chemicals, ships and aero planes, industries of heavy and basic industries for its development. All these industries help to develop agriculture, transport, communication facilities and other industries. It means development of large scale industries is almost essential for the development of heavy and basic industries.
Improvement in Productivity:
In large scale industries work is distributed among the labourers according to their efficiency which improves the productivity. These industries also use huge modern capital which raises productivity and reduces cost per head. It enables the consumer to get commodities at a cheaper rate.
Import Substitution:
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Capital goods and consumer goods which are imported from the foreign countries can be produced inside the country through large scale industries. Our country will depend upon foreign countries on heavy chemicals, heavy electricity, chemical fertilizers and other consumer goods, unless we develop large scale industries. Due to the development of large scale industries, all these commodities are produced inside the country and there is no need of import which is known as import substitution.
Export Promotion:
Large scale industries change the pattern of export. In the old days, we exported skin, tea, jute, jute products, spices of different types, and cotton clothes to foreign countries. Due to the development of large scale industries, we are now able to export engineering products, heavy electric products and other industrial products. It means large scale industries have changed the pattern of export and increased the quantity of export.