Alberta and Vancouver export desks closed the week of 19 to 23 October with the Chinese domestic sulfur tape parked at a three-month low while coastal inventory still sat above 1.1 million tonnes.
Shengyishe's 100ppi commodity wire on 23 October printed the national sulfur 基准价 at 5,714.25 yuan per metric tonne, unchanged from the 22 October update, with the statistics block citing a 25.65 percent decline versus the 7,685.67 yuan month-open reference on 1 October.
Tonghuashun iFind data republished the same afternoon showed an identical 5,714.25 yuan spot close, flat day on day, with the embedded daily table logging a 938.08 yuan or 14.10 percent loss over the prior week and a 2,038.08 yuan or 26.29 percent loss over the prior month.
The desk's session path for the week reads 6,076.75 yuan on 19 October after an 8.65 percent single-day drop, a second session at 6,076.75 yuan on 20 October, 5,776.75 yuan on 21 October, and two closes at 5,714.25 yuan on 22 and 23 October.
That sequence takes the national screen from the post-holiday band near 7,702 yuan in early October to a sub-5,800 yuan handle without a licensed price reporting agency weekly grid in the public record.
On the demand side, SunSirs' 21 October English market review described operating rates for downstream monoammonium phosphate and diammonium phosphate plants at just above 40 percent, with producers facing theoretical losses exceeding 1,000 yuan per tonne on current economics.
生意社 analysis carried on Sina Finance on 22 October put Hubei 55 percent powder MAP offers at 3,580 to 3,680 yuan per tonne ex-works, with a provincial average of 3,613 yuan per tonne, while 100ppi's 22 October DAP quote board listed one Hubei agricultural 64 percent traditional DAP ex-works offer at 4,600 yuan per tonne.
Fatty fertilizer data on 肥多多's 16 October weekly phosphate review, republished on open Chinese trade press, had put MAP industry operating rates at 41.36 percent and DAP at 43.33 percent for that survey week, a useful bracket for the SunSirs commentary even though the calendar has moved on.
Shengyishe's 21 October port inventory wire on the 100ppi rawmex feed left monitored coastal elemental sulfur at 1.1127 million tonnes, including Fangchenggang 420 thousand tonnes, Zhanjiang 350 thousand tonnes, and Zhenjiang 205 thousand tonnes, giving import buyers cover to delay stems.
Shandong Dongming Petrochemical's 22 October list on the same feed held liquid sulfur at 5,350 yuan per tonne after the 19 October cut to 5,000 yuan liquid, a single refinery quote that sits well below the national 基准 but above the 19 October Shandong refinery liquid auction band of 4,870 to 4,923 yuan per tonne reported by Mysteel from 隆众 on 19 October.
Open international markers from ChemPriceHub's 15 October week still frame Pacific competition at 830 to 840 dollars FOB Vancouver and 740 to 790 dollars FOB Middle East ex-Iran in the public roundup, the dollar anchors Alberta blocks must clear when Chinese yuan screens soften.
Alberta Energy Regulator ST3 through August 2026 shows closing sulfur inventory at 11,042,851.4 tonnes, the verified_public stockpile behind rail and terminal scheduling when Pacific buyers test lower Chinese replacement cost.
For the sulfur-to-phosphate demand chain and dated China fertilizer operating rates, see the sulfur phosphate fertilizer demand topic page and the China sulfur price daily table; licensed weekly assessment grids stay with your data vendor.
Desk read: treat 5,714 yuan as a pause after the October unwind, not a demand recovery signal, until phosphate run rates and port stocks move together; size Vancouver netbacks with 830 to 840 dollar FOB and 1.11 million tonne coastal cover in the same spreadsheet.