Shengyishe published its September 14 sulfur benchmark at 8,352.33 yuan per tonne on Monday morning, unchanged from the September 13 print.
The benchmark is up 0.04 percent from the September 1 level of 8,349.00 yuan in open Shengyishe statistics.
September 14 sample prices in the same series ranged from 2,100 to 9,700 yuan per tonne, matching the prior session's sample band.
The platform's September 14 trend analysis classified the market as strong consolidation with a bullish tilt, with the five-day spread turning negative while ten-day and twenty-day spreads improved from September 12.
A separate September 14 spread alert put the ten-day minus twenty-day gap at negative 183.36 yuan per tonne.
Shengyishe said the spread re-expanded negative after a brief narrowing phase, signaling declining prices accelerating again rather than stabilizing.
The benchmark sits in the middle-high band of its one-year range, with a one-year minimum at 2,627.67 yuan and maximum at 11,084.33 yuan.
The flat benchmark follows three sessions of unchanged sample averages near 8,352 yuan even as the commodity index corrected from early-September peaks above 474 points.
Middle East shipping risk through Hormuz and Bab el-Mandeb continues to floor import-cost math even as domestic Chinese indices pause their decline.
SMM's prior weekly reviews described upstream sulfur stabilizing in Shandong while sulphuric acid weakened, a divergence that fits a correcting rather than collapsing domestic market.
Port inventory near 966,200 tonnes in open Shengyishe data from September 10 continues to weigh on spot even as the national benchmark stabilizes.
For Alberta recovered sulfur on the Vancouver stem, a flat Chinese benchmark does not remove Pacific demand but signals buyers are not chasing offers higher.
Canadian export volumes through Vancouver rose in 2025 and early 2026 on inventory draws and supportive FOB margins while Gulf seaborne stayed impaired.
Desk read: September 14 is a technical pause print inside a wider correction. The corridor read is unchanged: Alberta tonnes still compete into a Pacific market that needs sulfur even when Chinese benchmarks stop moving.