September 23 plant wires on the domestic market chain reported Shandong Lihuayi lifting industrial solid and liquid sulfur offers by 100 yuan to 7,400 yuan per metric tonne while units ran normally.
The move partially reverses Lihuayi's September 21 cut to 7,300 yuan under a flat 7,669 yuan national benchmark, when Dongming liquid sulfur held near 7,700 yuan in the same Shengyishe plant table.
Shengyishe's September 23 national benchmark at 7,752.33 yuan per tonne leaves Lihuayi more than 350 yuan below the national index even after today's plant-side increase.
September 22 and September 23 benchmark gains added 83 yuan combined on the national line, while Lihuayi recovered only 100 yuan of its prior 300 yuan cut, highlighting uneven plant participation in the rebound.
Open wires the same day put Chinese port sulfur stocks at 940,200 metric tonnes, ample coastal supply that can keep Shandong offers conservative relative to the national print.
Shengyishe's September 23 trend analysis kept a strong rebound tag with the five-day mean difference at positive 58.66 yuan per tonne, technical support that plant quotes may follow with a lag.
Fertilizer Daily's September 20 phosphate review cut East China liquid sulphur toward 7,325 yuan, a fertilizer-chain reference still below both Lihuayi and the September 23 national benchmark.
BC Insight's September 19 Price Trends kept North American FOB sulphur steady at 1,100 to 1,200 dollars per tonne, the Pacific offer band that still governs Alberta netbacks when Chinese domestic spot moves in yuan.
Buchanan's September 21 letter cited Tampa sulfur near 1,100 to 1,200 dollars per long ton, reminding Atlantic phosphate desks that domestic Chinese plant quotes and US Gulf delivered levels operate on different scarcity curves.
Alberta July 2026 closing inventory at 11.11 million tonnes in AER ST3 confirms North American block stocks remain large even as Chinese plant offers oscillate under a correcting national index.
SMM's August customs put China sulfur imports down 65 percent year on year at 272,323 metric tonnes, weak import demand that can leave domestic plants competing for limited coastal buying interest.
Longzhong's September 20 Zhenjiang port granular quote at 7,200 yuan underscored coastal dispersion that Lihuayi's 7,400 yuan Shandong offer still does not fully close against a 7,752 yuan national line.
Desk read: Lihuayi at 7,400 yuan on September 23 is a partial Shandong recovery, not confirmation that plant quotes have caught the 7,752 yuan Shengyishe benchmark. Watch Dongming and port granular lines for a broader domestic floor.