- Managing, operating, maintaining and repairing railway telecommunication - signal systems.

- Constructing and installing works in information, telecommunication, signalization, power transmission, transformer, civil power and lighting electricity.

- Constructing transport works, civil and industrial works.

- Providing consultation services and constructing information, signaling and power works.

- Other business lines. 

- 28 April 1979: Sai Gon Railway of Telecommunication - Signalization Section was established under the Decision No.107/TC-LDTL issued by Vietnam Railway Authority;

- 30 November 1983: Renamed as Telecommunication - Signalization Enterprise No.5 under the Decision No.883/DS-TC issued by Vietnam Railway Authority;

- 01 April 1986: Renamed as Ho Chi Minh Railway of Telecommunication - Signalization Enterprise under the Decision No.124/DS-TC issued by Vietnam Railway Authority;

- 17 April 1998: Renamed as Sai Gon Railway of Telecommunication - Signalization Enterprise under Vietnam Railway Union;

- 2003: Renamed as Sai Gon Railway of Telecommunication - Signalization Company;

- 24 September 2010: Vietnam Railways Corporation issued the Decision No.1209/QD-DS on transforming Sai Gon Railway of Telecommunication - Signalization Company into Sai Gon Railway of Telecommunication - Signalization One-Member Limited Company;

- 08 January 2015: Ministry of Transport issued the Decision No.64/QD-BGTVT on approving the equitization Sai Gon Railway of Telecommunication - Signalization One-Member Limited Company;

- 09 December 2015: Initial Public Offering (IPO) was launched with a successfully offered quantity of 67,500 shares and average winning bid of VND10,100 per share;

- 19 January 2016: Put into operation under the model of a joint stock company with a charter capital of VND30,741,000,000;

- 02 December 2016: Became a public company;

- 18 April 2017: Traded on UPCOM market;