Zhoushan's bonded bunker volume is still fighting for vessel laycan. When traditional VLSFO is tight, methanol and LNG are starting to crowd into the bunker list — for the same international transshipment ship, the master now listens to multi-fuel proposals, and whoever sets the standard first takes next season's bunker volume.

This is not a rerun of the residue story. Residue is about splitting coker and bunker grades between marine fuel and roads; here the subject is alternative-fuel bunkering infrastructure and metering standards. LNG tank trucks connect at the quay, methanol lines supply directly, and the regulator's filing caliber for "marine clean fuel" is looser than two years ago, but metering and traceability remain hard problems.

For a transshipment and bonded player like SNSUC, multi-fuel bunkering means the energy cost of goods in transit can be quoted in a different currency and a different grade. Zhoushan wants to hold the standard itself, competing for the dwell time and repeat orders of international transshipment ships.