- Construction of transmission grids and transformer stations 500KV and civil engineering works.

- Construction and infrastructure development of urban area, industrial zones, export processing zones, high technology areas and new economic zones. Operation of hotels, restaurant and supporting services.

- Transportation of tourists.

- Offering domestic and international travel tour and massage services.

- Other activities under business license.

- October 25, 1995: VE9 is formerly known as Electricity Construction Service Team 3 established;

- May 18, 1999: Nha Trang Electricity Construction Service Company under Electricity Construction Service 3 was established on the basis of restructuring Electricity Construction Service Team 3;

- May 10, 2003: Electricity Construction Service Company 3.9 was established on the basis of restructuring Nha Trang Electricity Construction Service Company.

- December 06, 2004: it is privatized and renamed as Electricity Construction Service JSC 3.9;

- February 09, 2006: it is renamed as Electricity Construction JSC VNECO 9;

- January 23, 2008: Traded on Hanoi Stock Exchange (HNX);

- April 28, 2009: Increased charter capital to VND33.4 billion;

- April 28, 2010: Increased charter capital to VND72 billion;

- April 26, 2011: Renamed to VNECO 9 Investment & Construction JSC

- March 31, 2014: Increased charter capital to VND78.4 billion.

- October 28, 2015: Increased charter capital to VND115.96 billion.

- July 19, 2016: Increased charter capital to VND125.23 billion.

- November 09, 2020: Delisted from Hanoi Stock Exchange (HNX).

- November 17, 2020: Traded on UPCOM market.