- Constructing civil, industrial, transport and irrigation works.

- Trading petroleum.

- Trading construction machineries for lease. 

- 29 December 1982: Construction Company No.386 was established through merging of former divisions of Brigade 386 and Brigade 387, Enterprise 569 under the Decision No.2025/QD - BQP issued by Ministry of National Defense;

- 28 September 2007: Ministry of National Defense issued the Decision No.2743/QD-BQP on approving the plan of equitizing and transforming Construction Company No.386 under Thanh An Corporation into a joint stock company;

- 14 December 2007: Put into operation under the model of a joint stock company in accordance with the business registration certificate No.0100598520 issued for the first time by Hanoi Department of Planning and Investment;

- 2011: Charter capital was raised to VND18 billion;

- 2014: Charter capital was raised to VND23,099,080,000;

- 02 November 2017: Became a public company;

- 05 January 2018: Traded on UPCOM market;