PetroVietnam Technical Services Corporation (HASTC:PVS) agreed to acquire 50% stake in Son Tra General Port-Petroleum Service Joint Stock Co from Danang Port Joint Stock Company on April 20, 2015. On completion, PetroVietnam Technical Services Corporation will own atleast 51% stake in Son Tra General Port-Petroleum Service Joint Stock Co. In a related transaction,s PetroVietnam Technical Services Corporation agreed to divest its stake in Dong Duong Petroleum Transport Joint Stock Company and PetroVietnam Technical Services agreed to acquire unknown majority stake in Sao Mai -Ben Dinh Petroleum Investment Joint Stock Co.

The Board of Directors of PetroVietnam Technical Services Corporation approved the acquisition on April 20, 2015.