Industries are classified into three : 1. Primary- ex. Agriculture. 2. Secondary- ex. Manufacturing. 3. Tertiary- ex. Service Sector.
Tertiary industries are not related to production process.They are basically trade and services providingindustrieThere are various kinds and range of goods and services,so industry may be also of various types.Based on the value addition and tangibility broadly we can have three types of industries - primary industries,secondary industries and tertiary industries.

Primary industries are usually very simple industries involving processing of raw materials to give input goods for secondary industries.

Secondary industries are very complex and diversified which took input from primary industries and add significant value to it in different processing stages.
Examples are: banking industry, insurance industry,consultancy industry, etc.