- Constructing transport works under BOT and BT investment forms.

- Manufacturing and trading construction materials and precast concrete structures.

- Export-import of transport equipment and materials.

- Building 35KV electric lines and transformers with voltage of under 35 KV.

- Testing construction materials.

- Real estate trading.

- Providing commercial services.

- June 02, 1992: Construction Site No. 1 under Civil Engineering Construction Corporation No.4 (Cienco4) was established;

- January 16, 1995: Renamed as Construction Enterprise No.1 as a subsidiary of Civil Engineering Construction Corporation No.4;

- August 30, 1997: Renamed as Engineering Construction Company No. 492;

- February 14, 2005: Renamed as Mechanical Joint Stock Company.  

- November 19, 2007: Officially traded on Hanoi Stock Exchange (HNX).

- April 30, 2008: Renamed as Engineering Construction Joint Stock Company No 492