- Production, transmission and distribution of electricity.
- Constructing other civil engineering works.
- Exploitation of stone, sand, gravel and clay.
- Transport goods.
- Construction of railways and road.
- Wholesaling agricultural and forestry raw materials (except wood, bamboo) and live animals.
- Wholesaling solid, liquid gas and related products.
- Wholesale of metals and metal ores.
- Wholesaling materials and other installation equipment in construction.
- Other specialized construction activities
