Cosco is sourcing low-sulphur bunkers from Petro China subsidiary Double Rich.
It has signed a deal for fuel not exceeding 0.5%, it said.
The giant Chinese state shipowner said it is actively preparing for IMO 2020 and will achieve compliance by "multi-sourcing", according to Bunkerspot.
This includes research and development, and the use of scrubbers.
It has installed these exhaust cleaning kits on two ships and confirmed more will be fitted.