- Exploiting, processing and trading coals and other minerals.

- Building mine works, industrial and civil works and leveling premises.

- Manufacturing, repairing and processing mine equipment, transportation means and mechanical products.

- Producing rubber products.

- Producing and trading construction materials.

- Other under the business license.

- August 01, 1960: Deo Nai Coal Mine was established;

- 1993: Transformed into Deo Nai Coal Company;

- January 01, 2007: Transformed into Vinacomi Deo Nai Joint Stock Company with a charter capital of VND80 billion;

- December 21, 2008: Listed on Hanoi Securities Trading Center (Now Hanoi Stock Exchange);

- 2011: Increased the charter capital to VND160 billion;

- 2016: Increased the charter capital to VND294,390,970,000;