- 1990: Drilling Mud Enterprise was established; - 2006: Converted into a branch of Drilling Mud Joint Stock Company at Yen Vien. - 2007: Transformed into DMC-Yen Vien one member limited company. - 2008: Merged into DMC-Hanoi one member Limited Company; - 2009: Changed its name into DMC-Northern Petroleum Chemicals One Member Limited Company; - 2011: Renamed as DMC -Northern Petroleum Chemicals Joint Stock Company; - May 23, 2019: Delisted on Hanoi Stock Exchange (HNX); - May 31, 2019: Traded on UPCOM market; |