- Supplying specialized vessel

- Mechanical engineering and construction

- FPSO/FSO services

- Port-based services

- O&M

- ROV.

- 1976: Establishment of Geophysical Company;

- 1986: Establishment of Petroleum Services Company (PSC);

- 1989: Establishment of Geophysical and Petroleum Services Company;

- 1993: Petroleum Technical Services Company (PTSC) was established by merging Petroleum Services Company (PSC) and Geophysical and Petroleum Services Company (GPSC);

- 1994: Oil and Gas Company No.1 merged with PTSC;

- 2006: Equitized to become a Joint Stock Corporation;

- September 20, 2007: Traded on Hanoi Stock Exchange (HNX);

- 2008: Raised the charter capital to VND1,750 billion;

- 2009: Changed name to PetroVietnam Technical Services Corporation, increased the charter capital to VND2,000 billion;

- 2010: Restructured and Increased the charter capital to VND2,978 billion;

- 2012: Increased the charter capital to VND4,467 billion.

- 2018: Increased the charter capital to VND4.779,66 billion.