- In February 2006: Duong Quan Company Ltd, the precursor of Tai Nguyen Corporation, was established with initial charter capital of VND3.6 billion;
- In August 2006: the company renamed to Tai Nguyen Investment and Consultancy Company Limited, main business were real estate brokerage and mining consultancy services;
- In July 2007: the company changed to joint stock company with charter capital of VND15 billion;
- In June 2008: the company renamed to Tai Nguyen Corporation and hiked charter capital to VND30 billion;
- In 2008: hiked charter capital to VND40 billion through private placement;
- In 2009: The lead zince ore at Mun Chung, Xa Nhe, Dien Bien finished investment phase and started operation and generating revenue;
- In June 2009: hiked charter capital to VND85 billion through private placement;
- In December 2009: the company was recognized as a public company;
- In May 2010: the company debut shares on Hochiminh Stock Exchange (HOSE).
- February 01, 2016: Increased charter capital to VND255 billion;
- May 06, 2021: Renamed as TNT Group;
- October 22, 2021: Renamed as TNT Group Joint Stock Company;