- Construction of electrical works, electrical grid system and electrical transformer stations.

- Construction of industrial, civil, transportation and irrigation works.

- Manufacturing of building materials such as centrifugal concrete, precast concrete, block brick, terrazzo tile and daramic brick.

- Other under business license.

- June 13, 2005: Investment and Construction 3.12 Company, was equitized into Investment and Construction 3.12 Joint Stock Company.

- August 01, 2005: Officially operated as a Joint Stock Company with an initial charter capital of VND4 billion.

- March 07, 2006: Renamed as VNECO 12 Electricity Construction Joint-stock Company.

- October 27, 2007: Increased charter capital to VND12 billion.

- December 31, 2019: Traded on UPCOM market.