I have found this definition
"Large scale industries refers to those industries which require huge infrastructure, man power and a have influx of capital assets. The term 'large scale industries' is a generic one including various types of industries in its purview. All the heavy industries of India like the Iron and steel industry, textile industry, automobile manufacturing industry fall under the large scale industrial arena. However in recent years due to the IT boom and the huge amount of revenue generated by it the IT industry can also be included within the jurisdiction of the large scale industrial sector. Last but not the least the telecoms industry also forms and indispensable component of the large scale industrial sector of India. Indian economy is heavily dependent on these large industries for its economic growth, generation of foreign currency and for providing job opportunities to millions of Indians. "
I am giving example of India since i am from there.. By the definition you can now figure out the large scale industries of your country.
The main points of a large scale industry though are:
Huge capital.
Large amount of energy.
Large man power (labor).
Large area.
Large production per year.
Huge employment to local people.
