The "Czech joint-stock company for
kerosene refining in Kolín" was established on October 1, 1901. The Vacuum Oil Company became a major
investor during the First Republic, thanks to which the solvent-pair refining
unit enabled the production of viscous aviation oils.
This made it one of the two unique units in
Europe. After 1945, when the plant was reconstructed after the raid, the
traditional production was gradually resumed. In the 1960s, the plant began
processing hydrogenated oils from Litvínov. In 1993, a distillation column was
formed, allowing hydrocracks to be divided into narrow sections, and the first
high-index hydrocracking oils were produced. A new automatically controlled oil
mixer was built in 1996.