- Constructing and installing industrial, civil, transport and irrigation works.

- Providing consulting services in investment and construction.

- Investing, developing and trading technical infrastructure, residential areas.

- Producing and trading building materials.

- Providing passenger transport services.

- Importing, exporting materials, machineries.

- Other businessess pursuant to the business licence.

- May 07, 1969: Architecture Construction Team II under Ha Tay Architects , the precursor of Vinaconex 21, was established.

- December 01, 1992: Transformed into Khu Nam Construction Company.

- December 01, 2002: Became a subsidiary of Vietnam Construction and Import - Export Joint Stock Corporation.

- October 11, 2002: Renamed as Vietnam Construction Company No 21-Vinaconex 21.

- December 14, 2004: Transformed into Construction 21 Joint Stock Company with an initial charter capital of VND 6 billion.

- January 30, 2008: Increased charter capital to VND17 billion.

- April 21, 2010: Traded on Hanoi Stock Exchange (HNX).

- April 20, 2012: Renamed as Vinaconex 21 Joint Stock Company.

- December 25, 2015: Increased charter capital to VND40 billion.

- June 08, 2017: Increased charter capital to VND119,99 billion;