Shengyishe published its September 10 national sulfur benchmark at 8,264.25 yuan per tonne on Thursday morning, a 137.50 yuan or 1.69 percent gain from the September 9 print of 8,126.75 yuan.
The bounce interrupts a five-session corrective run from the September 7 peak at 8,639 yuan, which followed the early-September rally that had lifted the index from 8,349 yuan at month start.
On a month-to-date basis the benchmark remains 1.02 percent below the September 1 opening level of 8,349.00 yuan, so the correction is pausing rather than reversing.
Shengyishe's trailing-year statistics place the session in the mid-high band, with a one-year minimum of 2,627.67 yuan, a maximum of 11,084.33 yuan, and a median of 6,856 yuan.
The platform flagged a three-year overbought alert on the annual chart, consistent with the June peak above 11,000 yuan that preceded the late-summer pullback.
SunSirs' September 10 domestic review described coastal port markets in consolidation, with granular sulfur at Zhenjiang at 7,800 yuan and powder grades 30 yuan lower on the day.
The national benchmark sits roughly 460 yuan above Zhenjiang granular, so the index and port spot market remain disconnected after the correction.
Middle East shipping risk through Hormuz and Bab el-Mandeb continues to floor import-cost math even as domestic prices correct, a split SunSirs reiterated in its September 10 account.
QatarEnergy's September contract at 880 dollars FOB and theoretical CFR southern China above 1,070 dollars remain the seaborne reference points for Pacific netback calculations.
For Alberta recovered sulfur, a modest Chinese benchmark bounce does not by itself lift Vancouver bids when landed import costs stay four-digit and Pacific nominations compete on netback.
SMM's September 8 review put Canada's July exports at 444,100 tonnes with China a 33,000-tonne destination lane, so domestic Chinese price action still matters for marginal Pacific demand.
Desk read: September 10 marks the first daily gain after a week of correction. Watch whether the rebound extends or stalls at port-level consolidation near 7,800 yuan granular.