- To process, to install telephone, lightning-resistant fuses, anti-theft, anti- interference fuses and switch broad source.

- To merchandise and to distribute computing - Telecommunications equipments.

- To produce, to sell and to purchase computing software, cables, telecommunications equipment.

- To construct, install post and telecommunications projects.

- To repair and maintain post, telecommunication, computing equipment.

- To install computers, to consult, design and install computer network system and to be an agent of post and telecommunications.

- Others under business license.

- On Mar 2, 1993: Vien Lien Joint Stock Company was established with the initial charter capital of VND700 million;

- 1994: Increased charter capital to VND2.7 billion;

- 2002: Increased charter capital to VND 7 billion;

- July 2005: Increased charter capital to VND10 billion;

- December 2008: Increased charter capital to VND47.4 billion;

- July 2010: Increased charter capital to VND94.8 billion;

- January 2013: Increased charter capital to VND144.8 billion;

- June 2016: Increased charter capital to VND156,17 billion;

- May 30, 2006: Officially traded on Hanoi Stock Exchange (HNX);