Shengyishe published its September 11 national sulfur benchmark at 8,289.25 yuan per tonne on Friday morning, a 25.00 yuan or 0.30 percent gain from the September 10 print of 8,264.25 yuan.
The modest move extends the corrective pause that began with September 10's 1.69 percent rebound after five consecutive sessions of decline from the September 7 peak at 8,639 yuan.
On a month-to-date basis the benchmark remains 0.72 percent below the September 1 opening level of 8,349.00 yuan, so the early-September rally is still unwinding even as daily moves turn positive.
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.
SMM's September 11 weekly review put Shandong EXW sulfur at an average of 8,028.5 yuan, up 53.5 yuan week over week, in the same domestic recovery frame as the national benchmark.
The national benchmark sits roughly 260 yuan above the SMM Shandong average, reflecting the gap between the index and regional refinery gate prices.
Middle East shipping risk through Hormuz and Bab el-Mandeb continues to floor import-cost math even as domestic prices correct.
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 on the Vancouver stem, a stabilizing Chinese national index after the early-September slide keeps Pacific demand visible even as port spot grades trade below the benchmark.
Canadian export volumes through Vancouver have been rising on a multi-year path, and a China market that pauses its correction rather than accelerating lower supports nomination planning into the fourth quarter.
Desk read: September 11 is a small daily print on a still-correcting national index. The corridor read is unchanged: Alberta inventory and Vancouver loadport capacity remain the North American swing supply while Middle East seaborne stays impaired.