Fuel oil front-month closed at ¥4,363/t, up ¥6.00 on the day; bitumen closed at ¥5,256/t, up ¥5.35. Both rose, yet fuel oil now trades at a ¥893/t discount to bitumen — roughly nine hundred yuan cheaper per tonne.

This inversion is a yield signal, not a demand signal. On the residue side, refiners are routing more vacuum residue into coking or into very-low-sulphur bunker (VLSFO) blending rather than into paving-grade bitumen. The IMO2020 sulphur cap, pinned at 0.5%, keeps compliant VLSFO demand pulling residue yield toward marine fuel.

On the bitumen side, road-construction season is softening. As northern China moves into autumn, the paving window narrows and winter-stocking interest is muted, so spot premia cannot build. So both names are "up," but fuel oil is carrying a structural premium while bitumen is merely following cost.

For the re-exporter the read is concrete: bonded bunker fuel (VLSFO/HSFO) is underpinned by fuel oil, so the warehouse-receipt asset prices off ¥4,363/t; bitumen demand tied to infrastructure is weak, and the two "rallies" should not be treated as one logic when running cross-grade spreads. Residue yield shifts faster than bitumen supply, so the inverted spread may not mean-revert soon.