This division covers the generation and distribution of electricity, gas, steam, and hot water through networks of pipes and power lines. It includes supplying energy to homes, businesses, and industrial areas. The operation of utilities that produce and manage these resources is also part of this sector.

This division covers the transformation of raw materials into new products through physical or chemical processes. It includes making goods from agricultural, forestry, mining, or other industrial materials, as well as assembling parts into finished products. Some manufacturing processes create final products ready for use, while others produce materials for further production. Repairing industrial machinery and producing new goods from recycled materials also fall under this category.

This division covers the extraction of natural resources like coal, oil, gas, and minerals from the earth. These materials are obtained through various methods, including mining, drilling, and quarrying. It also includes processing activities such as crushing, cleaning, and sorting to prepare raw materials for use. Some specialized companies provide extraction services to other businesses.

This division covers the cultivation of plants and the raising of animals for food, materials, and other products. It includes growing crops, breeding livestock, and collecting natural resources like timber and wild plants. These activities take place on farms or in natural environments.