Shengyishe reported September 21 that Shandong Dongming kept sulfur units running normally while raising liquid sulfur 50 yuan per metric tonne to 7,700 yuan and solid sulfur 100 yuan to 8,100 yuan.
A separate September 21 Shengyishe release said Shandong Lihuayi Chemical cut industrial solid and liquid sulfur offers 300 yuan to 7,300 yuan per tonne with normal operations.
The 400 yuan spread between Dongming liquid at 7,700 yuan and Lihuayi at 7,300 yuan sits under a flat national granular benchmark at 7,669 yuan in Shengyishe's afternoon commodity table.
Fertilizer Daily's September 20 review put Zhenjiang granular sulphur at 7,150 yuan down 50 and East China liquid sulphur at 7,325 yuan down 70, closer to Lihuayi's level than Dongming's.
Longzhong's September 20 wire cut Zhenjiang port granular to 7,200 yuan, down 500 yuan week on week, showing coastal offers still below many Shandong petrochemical quotes.
Shengyishe's September 21 trend analysis labeled a strong rebound on improved five-day and ten-day spreads even as the twenty-day spread widened to negative 254.54 yuan.
SMM's September 18 weekly review put Shandong elemental sulphur EXW averaging 7,453.5 yuan, down 7.2 percent week on week, a benchmark-level move that preceded these plant-specific adjustments.
BC Insight's September 19 Price Trends described Chinese port markets softer on thin spot liquidity and cautious buying, consistent with fertilizer-chain weakness in FDD's September 20 phosphate table.
Middle East FOB sulphur averaged 855 dollars per tonne flat in SMM's 18 September table while CFR India was cut to an average near 1,050 dollars per tonne from 1,075 dollars.
For Alberta forming plants, weaker Shandong and East China liquid offers do not automatically translate into lower Vancouver FOB when BC Insight holds a 1,100 to 1,200 dollar band.
SMM's August customs tables list Canada among China's sulfur import origins, keeping Pacific swing tonnes in the import mix even as domestic plant quotes diverge.
AER ST3 July 2026 closing inventory at 11,109,610.9 tonnes shows Alberta blocks still ample when Chinese spot weakens faster than seaborne offer levels.
Desk read: September 21 Shandong is a two-way plant print day. Pair Dongming at 7,700 yuan with Lihuayi at 7,300 yuan and Zhenjiang near 7,150 to 7,200 yuan to read domestic dispersion, not a single national price.