Shengyishe published its September 24 national sulfur benchmark unchanged at 7,752.33 yuan per metric tonne, 0.00 percent on the day versus September 23's identical print in the open commodity table.
Month to date the index is down 7.15 percent versus the September 1 opening level of 8,349 yuan per tonne, so the flat session pauses a three-day run that added 83 yuan from September 22 through September 23.
September 22 lifted the line 40 yuan to 7,709 yuan and September 23 added another 43 yuan to 7,752.33 yuan before today's pause, keeping spot above 7,700 yuan without closing the more than 590 yuan gap to the September 1 open.
Shengyishe's September 24 trend screen flipped to counter-rally with a bearish bias from September 23's strong rebound tag, a technical warning that arrives on an unchanged national print rather than a fresh spot drop.
Open wires on September 23 put monitored Chinese port sulfur stocks at 940,200 metric tonnes, a coastal cushion that can cap domestic spot even when the benchmark had been ticking higher day over day.
Shandong Lihuayi held industrial and liquid sulfur offers at 7,400 yuan per tonne on September 23 after a 100 yuan plant-side increase, still more than 350 yuan below the national index at the flat September 24 benchmark.
SMM's September 24 sulphuric acid weekly put China's copper smelting acid index at 1,247.5 yuan per metric tonne, down 7.7 percent week on week, while Shandong sulfur EXW averaged 7,508.5 yuan in the same survey, up 0.74 percent on the week.
BC Insight's September 19 Price Trends kept North American FOB sulphur steady at 1,100 to 1,200 dollars per tonne while describing bearish buyer sentiment against stubbornly high spot levels globally.
Alberta Energy Regulator ST3 data run 27 August 2026 put province-wide closing inventory at 11,109,610.9 tonnes for July 2026, the verified_public block stock anchor on the North American side of the seaborne story.
The Vancouver Fraser Port Authority reported 3,507,428 metric tonnes of sulfur exports in 2025, up 5 percent year on year, showing the Pacific stem can still clear Alberta tonnes when FOB economics align with the 1,100 to 1,200 dollar band.
Buchanan's September 21 congressional letter cited Tampa sulfur near 1,100 to 1,200 dollars per long ton versus a 172 dollar ten-year average, the Atlantic policy mirror of the same tightness BC Insight described on open trade press.
SMM's August customs release on September 20 put China sulfur imports at 272,323 metric tonnes, down 65 percent year on year, a demand backdrop that can coexist with a flat domestic benchmark when coastal stocks stay ample.
Desk read: September 24 Shengyishe at 7,752.33 yuan unchanged ends the daily lift streak. Pair the flat print with the trend flip to counter-rally and D5 at 42.00 yuan until plant quotes or port stocks confirm the next move.